Common Tuning mistakes and problems

[crackelaktor]

Lots of threads in the forums about how good a tune is. I will be going down the path of a tune in the coming months and have already got a VCM OTR intake on my E3 GTS. Not asking who is the best tuner or anything like that but more a generic question on things to lookout for or consider before letting someone tune your car. Assume you have it down to the 2 best tune shops, what are the key questions to ask to ensure your $1000 gives you the best value? Ie, spoken to 2 tuners and not both of them tune for lower fuel grades, only 98 Ron. What else should be asked?http://tapatalk.com/mu/c094756f-3cae-3464.jpg

[Soopy]

Ask how they derive their timing maps.

[spudmo]

soopy. what does that tell the average bloke with no idea on tuning?

[boggers007]

The way i read it when he says derived is what have they built the timing tables from. Aka lots of R&D etc. Could be wrong tho.

[Soopy]

Well honestly, nothing if you don't have a clue. But then what can you ask with absolutely no idea?

[Soopy]

The way i read it when he says derived is what have they built the timing tables from. Aka lots of R&D etc. Could be wrong tho.

Pretty well.

[awesome _vzss]

It's pretty simple,you tell them what you want from your car.
Let it be for fuel consumption,track racing,drag strip use,daily driver or a weekend car.
To get the best from you tune is up to you on how well you communicate with your tuner and wouldn't hurt taking it to a reputable performance shop which should set up the car to your preference.
Do a search of the forum and read through threads regarding to what Mods you plan on doing and what you want to use your car for and which shop will suit your needs.
Plenty of good forum sponsor on here,give them a call or drop by and have a chat to them.
I know who I would recommend.:nyuk:

[swingtan]

It makes little to no difference how a tuner decides to achieve an end goal. What does matter is that they listen to what you want and will work to archive your expectations. There are many techniques that can be used and individuals prefer certain techniques over others.

Any decent tuner can cater for the use of low octane fuel. It's already built in to the stock tune. Go with a tuner that will explain their process and work with you to get you value for money.

It sounds like you want the option of running 95 Ron fuel, this is not impossible to do, but it is a compromise. The same goes for how you want to use the car and what is important to you. For example, a daily driver may require additional work on idle and cold start. A manual may need additional work on the gear changes and throttle transitions.

You need to explain your requirements and then decide who you can work best with

Simon.

[Toddler78]

Well honestly, nothing if you don't have a clue. But then what can you ask with absolutely no idea?


soopy. what does that tell the average bloke with no idea on tuning?


Ask how they derive their timing maps.

exactly, it isn't going to tell the average joe anything.

To the OP unless you have a basic idea or understanding of tuning there is nothing that you can ask that will give you an insight of one tuner being better over the other, they will just blow smoke up your a$$, what ever they tell you you wont know if it is good or bad. nor driving a car with a tuners tune in it will tell you if the tune is good or bad. Your just going to have to do your research and take a bit of a stab and hope it is ok.

Edit:

One question and probably the best question you could ask is "what type of guarantee do you have (ie money back guarantee if not happy with tune) or guarantee/warrenty if your engine lunches itself due to a bad tune, and they can point you to where it is written then thats the tuner to go for. A tuner or any tradesman for that matter that is prepared to back up their work with those guarantees has nothing to hide

[Soopy]

What you say is true. But in my mind its not to hard to grab a couple of books and have a read. Arm yourself with some information to give you some aid in sifting through dribble.

Otherwise you really are just taking a stab in the dark. Flipping a coin is really just as accurate method of choosing tuners as it is to consult a forum.

[dogsballs]

go to somewhere where you feel comfortable and believe they are listening to you and your needs.

bigger shops are not always the best.

[stockergts]

Also not sure about this but if it's running rich you can smell it at idle have a customers car in the shop ATM that I'm gong to suggest to go see actives or wa performance because of this it stalls all the tine too dog a a tune by a north of the river shop

[crackelaktor]

Lots of threads in the forums about how good a tune is. I will be going down the path of a tune in the coming months and have already got a VCM OTR intake on my E3 GTS. Not asking who is the best tuner or anything like that but more a generic question on things to lookout for or consider before letting someone tune your car. Assume you have it down to the 2 best tune shops, what are the key questions to ask to ensure your $1000 gives you the best value? Ie, spoken to 2 tuners and not both of them tune for lower fuel grades, only 98 Ron. What else should be asked?http://tapatalk.com/mu/c094756f-3cae-3464.jpg

So I took my E3 GTS in for a tune yesterday. Stock with a VCM OTR only. Before tune was 226rwkw and after tune was 264rwkw. Forget whether the numbers seem high or low as a 37rwkw gain is good....however the car now drives a lot worst down low and feels very sluggish. The tuner has asked me to come back on Saturday so they can take a look at it, and when I asked why it felt so sluggish down low, I was told because they removed a lot of timing down low so the car didn't need to rely on the knock sensors as they are very sensitive. Makes no sense to me and after $880 I am planning to ask them to return it back to standard. I cannot yet comment or sledge anyone as they haven't yet told me to go away but I will see how it goes on Saturday and how well they deal with this. The sad thing is that I was planning to go elsewhere but made a choice based on the tuner being close to home and $250 cheaper than the alternative. The alternative was recommended to me by Holden but I was impatient and broke one of my very own rules of don't cut costs as you may not get what you wished for. Very pissed off with the situation....my advice is go with your gut and if it isn't broken, don't try and fix it.....will keep you guys posted.

[awesome _vzss]

Sorry to hear,hope it gets sorted but come on Who was it.........:toetap:

[etrocket]

Mate, a perfect tune isn't done in one dyno run. just work with the shop to get the car they wAy you want it. As you said above they have told you come back which shows their happy to help.

[crackelaktor]

Mate, a perfect tune isn't done in one dyno run. just work with the shop to get the car they wAy you want it. As you said above they have told you come back which shows their happy to help.

Agree. At this stage this is more of a story to share than a criticism. Something isn't right and I hope it can be easily resolved. If not, back to standard tune for me.

[swingtan]

The removal of timing down low is not a bad thing, as the stock maps tend to be was to high. all engines will react differently to changes in the tune and it can take some time for lernt data to relean the changed conditions. If you explained your requirements to the shop and they agreed to do the work, then just take it back and work with them to get it to where you want it.

FWIW, I'd normally expect the bottom end to pick up some performance compared to stock when everything is working as it should.

Simon

[macca33]

So I took my E3 GTS in for a tune yesterday. Stock with a VCM OTR only. Before tune was 226rwkw and after tune was 264rwkw. Forget whether the numbers seem high or low as a 37rwkw gain is good....however the car now drives a lot worst down low and feels very sluggish. The tuner has asked me to come back on Saturday so they can take a look at it, and when I asked why it felt so sluggish down low, I was told because they removed a lot of timing down low so the car didn't need to rely on the knock sensors as they are very sensitive. Makes no sense to me and after $880 I am planning to ask them to return it back to standard. I cannot yet comment or sledge anyone as they haven't yet told me to go away but I will see how it goes on Saturday and how well they deal with this. The sad thing is that I was planning to go elsewhere but made a choice based on the tuner being close to home and $250 cheaper than the alternative. The alternative was recommended to me by Holden but I was impatient and broke one of my very own rules of don't cut costs as you may not get what you wished for. Very pissed off with the situation....my advice is go with your gut and if it isn't broken, don't try and fix it.....will keep you guys posted.


After all of the advice you've sought - here and elsewhere - you still decided to go with the 'cheap' tune....:confused:

You can only lead the horse to water......

I hope you get it sorted out, but honestly, why ask questions if you do not heed any of the answers you are given?

[CunningStunter]

This forum has been of great help to me when I had some mechanical issues with my 08 SSV.

I have taken my car to both sponsors of this site and non sponsors.

Whilst this place is great, sometimes the tuner being recommended may not be the best choice for you. ie Drag racing specialist. Even though they will know what they're doing, they may try and shoehorn you down a particular route they know well rather than the daily you wanted.

You seem wise in that you have a rule not to cut costs so I am curious as to why you ended up doing this....not having a poke at all though. More that I have adopted a similar rule recently after a certain paint job failure for me which is too long a story to talk about, needless to say the job was worse and ended up costing more, now to fix it I'd have spent alot more....so I can sympathise to a degree.

It's particularly disapointing though when it's your pride and joy. I would have to agree with everyone else here, communication is key and if you're not happy with the initial advice because it's not explained well, or they are condescending which is my pet hate then it's a flag straight up.

Alot of this is useless now that you've already gone with a tune, however I wouldn't say it's all bad just yet. Others may disagree and that's fine the way I see it is every car is different, the weather changes and so forth, so unless the company has ALOT of R&D time with your model car, under all types of weather conditions let alone any other variables, I'd hazard a guess it may take any tuner a few extra dyno runs to get it just right, probably even more so the more mods you have, the more you want to go to one end of the extreme - ie: most power, or best fuel econ etc

I will say this. I've now had a few tunes done on my car. The first one was a reputable place but seemed to concentrate on one thing only. I wasn't really made to feel welcome, was asked to leave the workshop when I stepped one foot inside because I wanted to check out the new exhaust...was advised it was a locked tune which didn't mean much to me at the time. The numbers on the dyno looked ok and being my first newish car, first V8 etc, I wasn't sure. Only the fuel consumption hinted at the fault that was there. . . 8L/100 on highway went up to 13L...!
11L City driving again up to 13L. Really oddly, it just used 13L everywhere no matter how I drived.....

So recently when my car had a few mechanical faults and I decided to get them fixed plus get in there ourselves and do some extra tweaking, I talked to the same workshop to suss out options. Again, I felt as though they were a little condescending simply for me asking about the details of their recommended cam, again a 'secret' custom grind with another locked tune.
Hmmmm...not filling me with confidence.

Talked to a few more places, was recommended to a local workshop and knowing the mechanic who worked in a bike shop, decided to let them lose on my pride n joy.

They took their time to understand what I wanted, started a file on my car and got me to write everything down. They handled my 100s of questions with ease, happyness and a willingness to share knowledge. During the dyno tuning I was allowed to sit in my car and watch what they were doing, suddenly tuning made ALOT more sense, being able to see the tables and how little changes affect things. Still far from being a topical expert but am now armed with alot more knowledge.

So don't give up on them yet. The choice is still yet to be proven to be the wrong one. What will prove their worth is whether they try and fob you off, charge you more etc or whether they get you coming back in until YOU'RE 100% happy with it.

Heck, my new preferred tuner had my car 3 times to get it *just* right. Being a cammed manual, there was some fine tuning on gear transition, cold start (hey I live in Canberra and this was done at end of winter) and as we were nearing the end of the wintetr (past the coldest part of the year) the 'cold' starts naturally got better because it wasn't as cold. During my last visit there, I mentioned this fact and was worried that when we got into the cold part of next year I'd have to look at this again - the best answer you can hope for - "No Problems mate, just bring the car back during the depths of winter and we will cover the tune under the cost of this tune" - 12 months after the fact. No Arguments, No hassles = Customer for life with all car repairs.

Any person will see that this the cheapest form of advertising. Companies spend alot of coin advertising, TV media esp so, so them spending the extra few hours to ensure their customers are happy saves them alot in advertising costs....word spreads. In the example above, what would it cost them to re-tune - a few hundred dollars (cost) to potentially win a customer for life.

Seems like a no brainer. So....are you happy yet? :)

[SVNLTR]

After all of the advice you've sought - here and elsewhere - you still decided to go with the 'cheap' tune....:confused:

You can only lead the horse to water......

I hope you get it sorted out, but honestly, why ask questions if you do not heed any of the answers you are given?

mac its a human thing to ask a question and when told the answer you still do the opposite-

people only want to hear what they want to hear...................

without drama their life is boring..........................

[QldKev]

So I took my E3 GTS in for a tune yesterday. Stock with a VCM OTR only. Before tune was 226rwkw and after tune was 264rwkw. Forget whether the numbers seem high or low as a 37rwkw gain is good....however the car now drives a lot worst down low and feels very sluggish. The tuner has asked me to come back on Saturday so they can take a look at it, and when I asked why it felt so sluggish down low, I was told because they removed a lot of timing down low so the car didn't need to rely on the knock sensors as they are very sensitive. Makes no sense to me and after $880 I am planning to ask them to return it back to standard. I cannot yet comment or sledge anyone as they haven't yet told me to go away but I will see how it goes on Saturday and how well they deal with this. The sad thing is that I was planning to go elsewhere but made a choice based on the tuner being close to home and $250 cheaper than the alternative. The alternative was recommended to me by Holden but I was impatient and broke one of my very own rules of don't cut costs as you may not get what you wished for. Very pissed off with the situation....my advice is go with your gut and if it isn't broken, don't try and fix it.....will keep you guys posted.


Your tuner has said come back and they will look at it. That sounds good to me. While they are taking ownership of the issue there is not a big problem. As stated in this thread and others, people often need to go back at least once to get a touch up. As CunningStunter said, he's been back 3 times and may need to go back next winter. I was happy with my initial tune, low down torque and top end power were both great, I don't have cold start issues but up here the car never gets started under about 10c. My car still ended up with about 4 hours worth of road time to finalise my tune before the tuner was happy.

I would not be too worried at this stage, and you may end up with a tuner who you will trust for many years. :driving:

QldKev

[RRR888]

Hey guys, is it common practise that once a tune is done on the dyno, a post tune test drive is undertaken to check the results?

Surely a simple test drive out in real world conditions would allow a tuner to feel whether the car is responding as it should before returning the car to the customer?

Good luck with the re-tune, hopefully it will be sorted out ! :)

[boggers007]

Hey guys, is it common practise that once a tune is done on the dyno, a post tune test drive is undertaken to check the results?

Surely a simple test drive out in real world conditions would allow a tuner to feel whether the car is responding as it should before returning the car to the customer?

Good luck with the re-tune, hopefully it will be sorted out ! :)

When i got my tune done on my old ute I was there for the whole thing asking questions and all that as i had been burnt by another so called tuner before. After I bugged the shit out of him during the dyno testing we both hopped in the car with me driving around probs a few k's just to see if i was happy with and so he could check the logs whilst i was doing this.

Mind you this was only a mafless tune aswell so i was happy with the effort.

[RRR888]

When i got my tune done on my old ute I was there for the whole thing asking questions and all that as i had been burnt by another so called tuner before. After I bugged the shit out of him during the dyno testing we both hopped in the car with me driving around probs a few k's just to see if i was happy with and so he could check the logs whilst i was doing this.

Mind you this was only a mafless tune aswell so i was happy with the effort.

Cool, thats the way to do it.

When I first had my car tuned, I was a bit more nieve and didn't take too much interest in what was being done. I just left the tuner to his devices and picked up the car later in the day.

I didn't have a problem with this, as I had faith the tuner would do a great job; i just regret not really taking more of an interest into how the tune of my car was being improved.

I will be getting another tune in the next month or two so I will be sure to discuss with the tuner what is happening. :driving:

[Soopy]

I wonder how many of these threads are started by customers who've read one to many disney dyno threads and expect to turn a pigs ear into a silk purse?

[VYSHSV8]

Good to see the tuner has taken ownership of the problem, it's not a real big problem, will just need more time spent in lower rpm range to get it right not just Wot:).
As said he backed the timing out but maybe didn't adjust the fuel to suit making it rich and gutless down low:(, but that can be easily fixed with some more dyno time and a roadtest with you driving and the tuner sitting in the passenger seat, so you can feel if it's improved or explain the problem.

[Soopy]

What if there's more power all the way through the rev range and the customer still complains?

[VYSHSV8]

What if there's more power all the way through the rev range and the customer still complains?

Then the owner needs his feel of the pants meter rechecked and pull that 10" out of it ;)

[Soopy]

That's exactly it though.

As much as I lay the boot into dodgy kents, when they are actually dodgy. I do have sympathy for blokes who have to deal with customers with very little idea.

[HYMEY]

so do you have a dyno graph before and after? clearly that will prove if it makes more down low? or u just having us all on lol.

[RRR888]

What if there's more power all the way through the rev range and the customer still complains?

Good point Soopy, it definitely goes both ways.

Customers need to have realistic expectations of what can achieved, just as the proffesionals need to be honest in describing what gains should be expected from modifications.

[crackelaktor]

After all of the advice you've sought - here and elsewhere - you still decided to go with the 'cheap' tune....:confused:

You can only lead the horse to water......

I hope you get it sorted out, but honestly, why ask questions if you do not heed any of the answers you are given?

Macca, proximity and the tuners reputation were key. The boys at Castle Hill have a great name in the industry which was another reason I went there. I spent $90k on the car so the $250 saving on the tune was not a key driver but a nice bonus. I'm sure there is a simple answer to this issue but am frustrated with the situation. Will be seeing them tomorrow to try and rectify it.

[awesome _vzss]

Agree. At this stage this is more of a story to share than a criticism. Something isn't right and I hope it can be easily resolved. If not, back to standard tune for me.

By the sounds of your comment,you don't sound to confident in the tuner.
If it dosnt work out,returning the tune to stock isn't the answer,maybe find a tuner that will setup the car to your liking,its not impossible just takes alittle more time and effort which some tuners won't on small jobs.
I do hope they work with you to result the problem and give you back the car to your liking,which I'm sure they will.

[crackelaktor]

so do you have a dyno graph before and after? clearly that will prove if it makes more down low? or u just having us all on lol.

http://tapatalk.com/mu/c0947565-a829-d4a1.jpg

[macca33]

That dyno sheet doesn't seem to indicate any loss down low - at least down to 2300rpm???? :confused:

Are you sure that you didn't simply expect TOO much from a tune on an almost stock car? All things considered, the HP gains indicated by that dyno graph are reasonable, to say the least.

[VYSHSV8]

That dyno sheet doesn't seem to indicate any loss down low - at least down to 2300rpm???? :confused:

Are you sure that you didn't simply expect TOO much from a tune on an almost stock car? All things considered, the HP gains indicated by that dyno graph are reasonable, to say the least.

I agree mate it looks great, it has a nice increase in everything torque/ power across the board.
Seems to me that the SOP meter was fine to start with and then as they get used to it, the power/ torque doesn't seem as much.

[swingtan]

As Macca says, that sheet tells a different story. It might just be that the bigger increase in "up top power" may make the car "feel" like it's got less down low. It's a pretty decent looking effort for a tuned stocker.

[crackelaktor]

That dyno sheet doesn't seem to indicate any loss down low - at least down to 2300rpm???? :confused:

Are you sure that you didn't simply expect TOO much from a tune on an almost stock car? All things considered, the HP gains indicated by that dyno graph are reasonable, to say the least.

You can now see why I'm confused. Like i said, there has to be a simple explanation here. Will keep you posted. Seat of the pants is very noticeable so definitely not imagining it.

[Soopy]

You can now see why I'm confused. Like i said, there has to be a simple explanation here. Will keep you posted. Seat of the pants is very noticeable so definitely not imagining it.

What do you expect from it?

The engine is still basically standard is it not?
There is only so much you can do with it, frankly it sounds as if the choppyness (for lack of a better word) in the stock tune as been rectified and the smooth operation as thrown you.

[crackelaktor]

What do you expect from it?

The engine is still basically standard is it not?
There is only so much you can do with it, frankly it sounds as if the choppyness (for lack of a better word) in the stock tune as been rectified and the smooth operation as thrown you.

Stock engine except for VCM OTR intake. Down low for everyday street driving is a lot sloppier and feels soft compared to the stock tune. Not normal considering I was told I'd notice a big improvement in pedal response. Will let you know how it goes.

[10sec_rx7]

As I said to you yesterday and this morning when you rang we will sort it out, there is obusally something somewhere that I didn't pick up in the test drive,

Just to put your mind at ease I will put the stock tune back in and start from scratch again just to make sure there is nothing missed..

Before the car even went near the Dyno I told you it would make 230rwkw stock and 260rwkw when tuned, when you fit the intakes like that and move the maf to directly in front of the throttle body it effects the mixtures a lot,

Anyway bring it down tomorrow morning and I'll sort it out,

[crackelaktor]

As I said to you yesterday and this morning when you rang we will sort it out, there is obusally something somewhere that I didn't pick up in the test drive,

Just to put your mind at ease I will put the stock tune back in and start from scratch again just to make sure there is nothing missed..

Before the car even went near the Dyno I told you it would make 230rwkw stock and 260rwkw when tuned, when you fit the intakes like that and move the maf to directly in front of the throttle body it effects the mixtures a lot,

Anyway bring it down tomorrow morning and I'll sort it out,

Dale, I know you will. Something isn't right. Appreciate your support and good will. Like I said to Macca and others, one of the reasons I came to you was because of the name and reputation. Cheers.

[Soopy]

What exactly do you want from it?

[xforddriver]

Coming from a XR6T, CHE have a very good rep and will more than happy to accomadate you with fixing things. Plenty of fast fords and holdens have come out of there. One thing i can say is your in good hands judging what some of my ford mate's say. They have been in the game a long time, just think maybe you were expecting more RWKS. Trust me coming from a 380rwks XRT into a 250kw VZ cannot wait to modify. Graph looks ok .

[BLACK 346]

Coming from a XR6T, CHE have a very good rep and will more than happy to accomadate you with fixing things. Plenty of fast fords and holdens have come out of there. One thing i can say is your in good hands judging what some of my ford mate's say. They have been in the game a long time, just think maybe you were expecting more RWKS. Trust me coming from a 380rwks XRT into a 250kw VZ cannot wait to modify. Graph looks ok .

Mate of mine just had a mailorder done by CHP for his VZ SV6, he is very happy with it. The customer service and advice was excellent as well.

[crackelaktor]

Dale, I know you will. Something isn't right. Appreciate your support and good will. Like I said to Macca and others, one of the reasons I came to you was because of the name and reputation. Cheers.

Definite improvement with another hour on the dyno. Will take it for a longer drive later and put it through it's SOP tests. Thanks Dale for the time and improvements this morning. Car feels better down low already.

[VYSHSV8]

How much more did it make about 3 kw or something as a guess
And you can feel that through your Sop meter :lol:

[crackelaktor]

How much more did it make about 3 kw or something as a guess
And you can feel that through your Sop meter :lol:

More timing was added down low and around 6kw. Torque and throttle response is what I am feeling more of. A lot more time was spent tuning at low revs.

[jc_sv8]

CHE put my ripshift in back in late '06 and it's still as good as the day they put it in.
The guys certainly know their business, just wish I had my tune done there before leaving Sydney.

[VYSHSV8]

More timing was added down low and around 6kw. Torque and throttle response is what I am feeling more of. A lot more time was spent tuning at low revs.

Put up the dyno sheet please, to have a look at

[1BEAST2NV]

drew... not another one :slap:

[crackelaktor]

drew... not another one :slap:

Mate, not about to turn this thread into a feeding frenzy. Was looking to share the experience with the forum to understand whether my expectations of doing it once and the first time was fair. From the responses and my own experience, it seems that going back more than once is not unusual and sometimes required to get some adjustments made. My car is a daily driver and not going to compete for the best dyno graph or power stakes. What I was after with my basic mods was the best drivability I could get and knowing the car was optimized for what it could be. I'm happy with the service my tuner is giving me to get it optimal and not after a sledging match from members who think a newby to the forum with a near stock car is full of it. I have nothing to prove champ. Just wanting to pull from the collective experience out there.

[10sec_rx7]

Glad your happy mate if there is anything more we can do just give us a call

Dale

[VYSHSV8]

drew... not another one :slap:

Nah Kev just wanted to see where the increases were made:) and compare it to the sop meter :)
Also to see if there was a linear increase across the board or in a main spot

[Avalanche]

A flat out run the dyno won't show you where CHE has adjusted the tune to make the low down part throttle areas more responsive for cracklelater. Good on Che for following up. All tunes aren't the same, & what people expect out of a tune are always going to be vastly different. Cracklelater , thanks for posting your thoughts.

[etrocket]

Mate, not about to turn this thread into a feeding frenzy. Was looking to share the experience with the forum to understand whether my expectations of doing it once and the first time was fair. From the responses and my own experience, it seems that going back more than once is not unusual and sometimes required to get some adjustments made. My car is a daily driver and not going to compete for the best dyno graph or power stakes. What I was after with my basic mods was the best drivability I could get and knowing the car was optimized for what it could be. I'm happy with the service my tuner is giving me to get it optimal and not after a sledging match from members who think a newby to the forum with a near stock car is full of it. I have nothing to prove champ. Just wanting to pull from the collective experience out there.

Why didn't you hold off from posting. Should have given the shop the opportunity (as they offered) to rectify your issues. Then people get the whole story and not jump to conclusions

[Woteva]

Why didn't you hold off from posting. Should have given the shop the opportunity (as they offered) to rectify your issues. Then people get the whole story and not jump to conclusions

Seems like a good thread to me. Just shows that a custom tune isn't always completed in one visit. He didn't bag the tuner and it all worked out in the end, so no problem! :thumbsup:

[AndrewMSS]

Agreed - I think CHE have handled this exactly right...take the car home, drive it for a few days then come back in for a touch up. I've had two tuning experiences, one was a once off hit on the dyno the other was an iterative process. I bet you can guess which one came out better?

I was told to take the car away - drive it for a while and actually make notes of things I noticed or wanted improved.