E3 senator tune

[TTR308]

Hi all and "HNY"....
I've purchased an E3 Senator 4 weeks ago and have decided to:

- Put new exhaust: Hi-Tech
- Have a tune with MAF and no OTR.

Well.... wasn't i suprised...:confused:

The car went on the dyno stock with only the exhaust and it pumped out..... wait for it.......211rwkw.......WTF....!!!!!
These things are meant to have 317kw at the F/W and approx. 240rwkw.

After the tune, she's close to 260rwkw........(259.6rwkw) to be exact.

Is the 211kw normal?

I had it done at a 'well know' Sydney tuner.

Cheers.

[Wonky]

Must be an extremely pessimistic dyno (as some are). Dynos are only tools for tuning - what matters is the gain!! My guess is that on a different dyno you may find you have 15% or so more. It could also be that the exhaust actually lost you power until the tune parameters were adjusted to suit it.

[TTR308]

Thanks mate.
Maybe I'll try another dyno.....just for curiosity.
The car went well before the the tune.
It sounds quite good and i have 'slightly' noticed a bit more mid range pull.
Idle is up a notch too now.

Thanks Wonky.

Take care.

[macca33]

211rwkw pre-tune does seem a tad low, however, as Wonky stated, it is the gain that ought to be looked at - if the tuner was doing everything above board.

Not trying to throw stones, but in the past, some have been accused of deliberately returning low pre-tune readings, to make their post-tune figure (and the differential in output) seem much better than what it really is.

Not saying this is the case here, but it has happened.

Using the oem airbox / intake set-up does limit your capacity also.

cheers

[UTESRULE]

:rofl::rofl: i would say this is the case try another dyno would go back to these ppl again 211 is too low

[Avalanche]

I have always wondered, does turning off the torque control in the tune while on the dyno have an effect on the final reading maybe?? Does this sometimes explain the differing readings between dynos?? I have often wondered about cars that have a tune & then go back to the same place a few months later for a dyno day etc & there are 20-30 rwkw missing.

[blu ute]

Manual or auto?

[steve_t]

Not trying to throw stones, but in the past, some have been accused of deliberately returning low pre-tune readings, to make their post-tune figure (and the differential in output) seem much better than what it really is.


How would one of these tuners do this? Is it using vastly different correction factors? Anyone able to explain the rationale behind what correction factor is used? Cheers :)

[UTESRULE]

they just use an old dyno run with the number on it and put ur details on it

were u there when they ran the car on the dyno

[Wonky]

There are all sorts of ways to fudge figures. The tuner I used to use demonstrated on my SSV sedan by giving it three runs, tying it down harder each time and (from memory from close to 4 yrs ago) there was about 15rwkw difference between highest and lowest runs.

[UTESRULE]

thats very true wonky went to a dyno day a bloke there had a hsv they put it on the dyno and got 286rwkw he chucked up a masive stink saying my car has over 300 so the tuner lightened the straps and got 302

[Wonky]

Strapping down hard usually results in a lower reading, unless it basically wasn't initially being held down at all.

[SAMCRO]

That is very low, go get second dyno run done somwhere else mate.
My previous ve ss 07 did 247 rwkw with just vcm otr.
Although ppl are speculating that the car might have been tuned by it's previous owner I am not 100% as I never checked before it was written off.
Anyway hope you get a better result next time. Or you could line it up against ss at the lights and see how you go :)

[Jonesy40]

end of the day a dyno is a tuning tool and tuning tool ownly. if you are happy with the improvment of the car i wouldnt be to worried about the numbers.

has the saying goes we race cars not dynos

[TTR308]

Hi guys,
Many thanks for your replys.
I was there when the tune was done "UTESRULE" and i think that you're spot on with regards to an old dyno run.
On its second run the car was strapped down harder.
It's an auto "blu ute".
I'll take it next week on another dyno and let you all know.
I too wonder sometimes "macca33"....!!!!
Just out of curiosty... have any of you boys either used 'oztune performance' or 'Dart Automotive'...???
Both are in Sydney.
I'm thinking of going there for the power run.

Thanks to all.

Cheers.

[BEARWOOD]

Explain to me what you are hoping to achieve by going somewhere else just to put it on another Dyno? Your car isn't going to change by doing this and if your happy with how it drives i don't really understand the problem???? So what if the initial run wasn't right, it's the final result you should be worried about & now that you have the exhaust and tune done you will never know unless you return it to stock. 260rwkw on a conservative(correct) dyno could be about 280rwkw on another dyno and to me thats on the money for what you've done.

[steve_t]

Explain to me what you are hoping to achieve by going somewhere else just to put it on another Dyno? Your car isn't going to change by doing this and if your happy with how it drives i don't really understand the problem???? So what if the initial run wasn't right, it's the final result you should be worried about & now that you have the exhaust and tune done you will never know unless you return it to stock. 260rwkw on a conservative(correct) dyno could be about 280rwkw on another dyno and to me thats on the money for what you've done.

Bragging rights? :1peek:

[LSX-438]

Strapping down harder will give you a lower dyno number. So doesn't really add up. I think the best bet is to take it to WSID for a run down the qtr.... Do a few runs, the only true measure will be your MPH.


Hi guys,
Many thanks for your replys.
I was there when the tune was done "UTESRULE" and i think that you're spot on with regards to an old dyno run.
On its second run the car was strapped down harder.
It's an auto "blu ute".
I'll take it next week on another dyno and let you all know.
I too wonder sometimes "macca33"....!!!!
Just out of curiosty... have any of you boys either used 'oztune performance' or 'Dart Automotive'...???
Both are in Sydney.
I'm thinking of going there for the power run.

Thanks to all.

Cheers.

[TTR308]

Hi guys....
Nooooo..... no bragging rights here....i'd be embarrassed otherwise.
I was just concerned that the 211rwkw was too low for something that should have been around the 240rwkw mark.
I was doing a search on the net and ended up on GM Motorsport for dyno printouts.
They had cars with otr, cam exhaust and mafless tune which produced 260 -270rwkw.
So "BEARWOOD" ... your spot on mate.

[Alex(AUS)]

Hi guys....
Nooooo..... no bragging rights here....i'd be embarrassed otherwise.
I was just concerned that the 211rwkw was too low for something that should have been around the 240rwkw mark.
I was doing a search on the net and ended up on GM Motorsport for dyno printouts.
They had cars with otr, cam exhaust and mafless tune which produced 260 -270rwkw.
So "BEARWOOD" ... your spot on mate.

Mine put down 230rwkw (standard LS2) on a newer dyno dynamics. At the time everyone (dyno day) was claiming it was reading low ... go figure ... I have noted that GM motorsport claim into the 300s for tune/otr/exhaust in a manual LS3 ... They have quite a few videos on their site.

Alex

[TTR308]

Explain to me what you are hoping to achieve by going somewhere else just to put it on another Dyno? Your car isn't going to change by doing this and if your happy with how it drives i don't really understand the problem???? So what if the initial run wasn't right, it's the final result you should be worried about & now that you have the exhaust and tune done you will never know unless you return it to stock. 260rwkw on a conservative(correct) dyno could be about 280rwkw on another dyno and to me thats on the money for what you've done.

Hi guy's.....
"BEARWOOD", you're spot-on ... :goodjob:
I took the car today for a power run on a different dyno, (curiosity)... and the figures changed by 2kw.
And you're right.... i am happy with the way its going.
It was only just to 'crispen' the throttle response a bit.
The guy recommended an OTR...(VCM) and not to touch it other than that as he was quite happy with the way it goes too.
So i might just go for it.

Thanks guy's for all your help.

[Delft Maloo]

maybe you got a dud? every car is slightly different and some are better than others while some are not, its always been the case, eg my vu maloo with complete exhaust, otr and tune made around 240rwkw but a mates vy ute all my parts on it would struggle to make over 220rwkw? the exact parts that came off my car went on to his and i tuned both of them, his car was just a slug plain and simple and they are out there and its just pot luck on what you get.
Look at the gain not the peak number, would you rather have had a car that made 250rwkw stock and finished with 260rwkw after spending that money?

[TTR308]

Spending $2k and gaining 10kw........ yeah.... i'd be dissapointed.
50kw for a couple of minor 'tickles' - (cat back exhaust and software mod) - ain't too bad when you think of it like that.
At the end of the day, just how much is a 'kw' worth...?????

[Delft Maloo]

At the end of the day, just how much is a 'kw' worth...?????

depending on how addicted you get it can be alot:jester:.

[TTR308]

How very true...
Cheers mate.