Mafless tune whilst keeping MAF

[wadevzss]

I have decided to get a mail order mafless tune from Oztrack. Steve says he will do a mafless tune but i will keep the maf (for looking roadworthy/legal), but i think he turns it off in the computer. I am then wondering about a OTR that allows the maf to stay attached (even though it wont be operating). Anyone know which one would be the best, i know i should wait till after i get it to get the tune. Just wondering if these OTR's are street legal in Queensland, and if not, why not?

[Nidz]

Just go Mafless and forget about the MAF...

ORSSOM has a MAF on OTR.

[smokey777]

i have a mafless tune done with the maf still in place "to look proper" but i think my lumpy idle would give it away lol

[Special K]

get on to ziggy mate. he's a forum sponsor.

i did a test run on his OTR that retains the MAF still.

awesome product, great results.

http://www.ls1.com.au/forum/showthread.php?t=123121

[smokey777]

get on to ziggy mate. he's a forum sponsor.

i did a test run on his OTR that retains the MAF still.

awesome product, great results.

http://www.ls1.com.au/forum/showthread.php?t=123121

i have a ziggy on mine awsome bit of gear

[Special K]

likewise. i have since upgraded to a ziggy MAFless. got it tuned today. its unreal

[blackbettyhsv]

Im gonna ask a reel dumb question here as Im not mechanically minded, but what is maf & mafless.
Im also about to buy a OTR to go with my cats & headers but not sure which one to get, so without searching maybe It can be explained in one go :bow:

[blackvt]

I have a mafless tune on my VT with no otr, I just put the maf on a lathe and milled out all the pointy bits and edges in the middle till it was smooth, snaped the pins off the plug on the maf and then put it all back together so it looks completely stock :)

[HSVREDSLED]

Here is a laymens interpretation

Look in between you airbox and throttle body on that bendy black hose. You will see a silver thing with clamps on it. This is your MAF. It is an airflow meter which supplies information to your computer. Tuning a car 'mafless' means the computer does not need this data. So the maf can be flicked and an OTR fitted. The added beauty is that the maf is quite restrictive in terms of airflow, so a OTR is designed as a ramming effect to get heaps of cold air into your engine.

The options are,
tune the car to run with the maf and leave the maf in place.
Tune the car mafless and leave the maf in place disconnected.
Tune the car to run with the maf and have the maf in between the OTR and Throttle body
Tune the car to run mafless, ditch the maf and put in an otr. (this is the preferred option)

Others please chime in as I am no expert.

[OMR346]

Ziggy doesnt do a MAF OTR to fit VT-VZ. Just ditch the MAF and go for the OTR

[NewV8]

Ziggy doesnt do a MAF OTR to fit VT-VZ. Just ditch the MAF and go for the OTR

I thought OTR wasn't legal.
So, no point of having a MAF with the OTR to make it look legal.

[Oztrack Tuning]

The thing with the VZ's is you cant just ditch the maf - the engine needs an IAT and they have it in the Maf, so ditching the maf requires a separate IAT to be wired in.

Dus's OTR comes with the IAT ready to plug into the current harness. So thats an easy swap.

Mafless tune in a VZ with the maf in place makes it easy to later get a OTR. Ive set them up so they are good in both situations.

[blackbettyhsv]

The options are,
tune the car to run with the maf and leave the maf in place.
Tune the car mafless and leave the maf in place disconnected.
Tune the car to run with the maf and have the maf in between the OTR and Throttle body
Tune the car to run mafless, ditch the maf and put in an otr. (this is the preferred option)

Others please chime in as I am no expert.[/QUOTE]

so the last option is good for my VE clubby then

[HSVREDSLED]

Im not sure about VE's.

A forum tuner should chime in now.

[Oztrack Tuning]

Yes all options work for VEs

[mce]

When the highway patrol car pulls you over in his F6 typhoon , ask him where his Maff is

[Prodrive#1]

Mafless would be best from what people have told me.

[blackbettyhsv]

cool all I need to do now is pick which brand OTR

[ThunderSS06]

When the highway patrol car pulls you over in his F6 typhoon , ask him where his Maff is

Ford's Havent had MAF's for years.

Im a bit of a newbie to the Holden scene. In terms of legalities and the actual output gains, is there really any requirement to remove the MAF?

From the searches I've done through the Forum (incl this thread), no one can really give an absolute answer on the MAF vs MAFless. I think the potential difference are always drawn from the Tuning done.

Im considering how I want to commence modding my VZ (6.0 L76), and I think an OTR will be the way to go, but would prefer the option of retaining the MAF for ADR and registration purposes (I move alot around OZ), but then again is an OTR completely legal as it is not an enclosed Box.

[Jesterarts]

I was under the impression that part of the reason to do a mafless tune is because the MAF itself is a airflow restriction?

So keeping it in partially takes away from the tunes potential?

Why not just get a bigger MAF and go a MAF tune?

Then you're moreso in the clear with the boys in blue.

[tigass]

Never thought goin MAFless was illegal?
Someone care to explain, if its illegal, and if yes, why??

[TERRAFIRMA]

get a dus otr, they look factory as, no maf in sight :D

[fallout]

i have a mafless tune done with the maf still in place "to look proper" but i think my lumpy idle would give it away lol

if the biggest problem with the maf is the flow restriction should just goes maffless then gut the maf so it looks stock but dosn't have the restriction.

[Popeye1]

Why make it look stok, unleash the beast thats what they ment to do.

[Jesterarts]

Never thought goin MAFless was illegal?
Someone care to explain, if its illegal, and if yes, why??

The MAF is part of the car's emission control. So if a car comes factory with a MAF, then in order for it to be legal by EPA standard, it needs to retain the MAF and a tune that uses the MAF.

You could probably get the car engineered to run with a mafless tune but i would imagine if would be alot of dicking about.

Only Holden V8's that can legally run MAFLESS is the GTS as it comes factory without a MAF.

Same deal with some OTRCAI's, they are illegal as they run a filter that is not enclosed.

Pretty sure most modified cars, be it exhaust, suspension, tune, cam, etc are technically illegal. But it depends on how cluey the cop pulling you up is.

[Mightypns]

Whats the chances of gutting a Maf, just like people do with cats, empty the Maf and run it in place with a Maf-less tune.
It's all about looks afterall.
Mightypns

[taner]

yea i think most ppl will just ditch the maf if going mafless with the otr simply because if they get pulled over they will most likely get done for the otr anyways so why bother trying to bore the maf..but if your not going the with otr i guess it will still retain a std maf look. to keep the boys in blue at bay

my 2c

cheers
Taner

[ejukated]

the VZ maf is 85mm so its not that much of a restriction to a mild combo, certinaly not worth gutting it just for looks...

[smokey777]

im just not keen on spending another 600 on a mafless OTR when the maf OTR works?? just keep maf there or put in a seperate bit