Modshack MAF housing

[Koomorph]

Has anyone tried any of these....?

http://www.modshack.info/bamm.htm

I'm consdiering it with the GTRS conversion.... but they cliam that it's good to use with normal map and a 4bar FRP....

Raf

 

[Feel]

Yermother has/had one.

Depends very much on what your tuner will say with your GTRS as the fuelling needs to match the measured (scaled) airflow.

 

[Koomorph]

If you can use S3/LCR/TT Maf housing with standard Maf element when you go big turbo..... surely you could this maf with standard element - and just map accordingly.....

Raf

 

[DPJ]

If you can use S3/LCR/TT Maf housing with standard Maf element when you go big turbo..... surely you could this maf with standard element - and just map accordingly.....

Raf

Of course you are right there.

I'm just a bit uncomfortable with things that are sold on the basis of 'fooling' the ECU.

 

[Feel]

"and just map accordingly"

Yes, but it depends on your tuner. Revo StgIII, for example, is generic so you wouldn't get them to "just map accordingly".

Which is why I said that it depends on your tuner.

 

[Koomorph]

"and just map accordingly"

Yes, but it depends on your tuner. Revo StgIII, for example, is generic so you wouldn't get them to "just map accordingly".

Which is why I said that it depends on your tuner.

Which is why I wouldn't choose a tuner that puts on a generic map on a forced induction car.....

Raf

 

[Feel]

What, like VAG do you mean? You seem to ask a lot of questions about stuff, seeing as you have so much to teach the rest of us

Anyway, I understand that both Custom-Code and Jabba (and Star) can re-scale the MAF on the standard ECU, and that others can do it on a standalone. Re-scaling the MAF can be done in different ways, so choose carefully.

Personally, I would choose a tuner to map your GTRS, get injectors and fuel pump etc that the tuner suggests and let it settle. Unless your tuner suggests a BAMM, don't bother - compared to a well set up GTRS you're going to see very little improvement.

 

[YerMother]

The only reason i went for the BAMM was to upgrade the flow of the standard LCR injectors from 380cc to around 440 with a 4 bar FPR while using the same APR Stage 2 MAP. Because my setup around the 300BHP mark I wanted a bit more margin of safety to make sure it wont run lean. 440cc is good for around 340-350 BHP so is more than adequate!

 

[Koomorph]

What, like VAG do you mean? You seem to ask a lot of questions about stuff, seeing as you have so much to teach the rest of us

No Phil, not like VAG. I don't class stock VAG cars as performance tuned vehicles.... as you know VAG stock maps run within certain tolerance thresholds meaning its highly unlikely that anything will fail due to minor differences in the way each individual engine is manufactured - and so the map can be replicated because the different tolerances in engine and components produced during manufacturing will hardly ever be below the the threshold settings of the map. (E.g stock rods etc.. good for approx. 350bhp... yet VAG only map up to 225+....) When you take a stock car and start adding goodies to it and pushing it to the limit, you're running much closer to the tolerances on all components - and in some cases beyond (if you're unlucky). By using a custom map you're at least creating ignition/fueling cycles etc.. that exactly match your car depending on what goodies you've got bolted on. Yes you may be reaching the tolerance levels of your components as well with a custom map, but at least you can be sure that is they fail, it's not becasue the generic map was wrong and caused the failure, rather you've been unlucky because your crank was cast by a Friday afternoon monkey in Frankfurt with a tolerance level of 250bhp.... Unless of course your custom mapping was done by the same monkey.... Anyway, preaching to the converted no doubt....

I'm not slagging Revo or any other company which produces generic stage 3 maps, and I'm sure they run to set tolerance levels as well, I'd just rather have a map that is designed to the way my car is set-up rather than have a map that dictates which components I need to install first to run it. Totally counter intuitive in my book.

The reason I ask a lot of questions is because I'm new to VAG platforms..... former Ford man......

Personally, I would choose a tuner to map your GTRS, get injectors and fuel pump etc that the tuner suggests and let it settle. Unless your tuner suggests a BAMM, don't bother - compared to a well set up GTRS you're going to see very little improvement.

Tuner has been chosen and I'm deciding on injectors for the mapping based on if I go 3 or 4 BAR and estimated BSFCs of the 20v lump....

Raf

 

[m0rk]

Yes you may be reaching the tolerance levels of your components as well with a custom map, but at least you can be sure that is they fail, it's not becasue the generic map was wrong and caused the failure, rather you've been unlucky because your crank was cast by a Friday afternoon monkey in Frankfurt with a tolerance level of 250bhp....

Please tell me that someone can custom map around a crank?

Fords (like I think you're referring to) are old skool, the VAG ECU's are pretty versatile

Plus, in the US, where there is a big BT market, people want an arrive & drive fix. Just want 350bhp. they don't care how

Equally... if you say you need various mods to complete the requirements for the software, they're all things you need.

Basically, ask yourself (or others) "what will this tuner ACTUALLY change when custom mapping my car"

I promise you, it won't be much in 5hrs.

 

[m0rk]

Tuner has been chosen and I'm deciding on injectors for the mapping based on if I go 3 or 4 BAR and estimated BSFCs of the 20v lump....

Raf

Also... make sure your tuner can actually make the right changes for whatever you decide.... normally it's safer to let them decide as they might not actually have the ability to make said adjustments

 

[Koomorph]

Please tell me that someone can custom map around a crank?

That wasn't my point Mark - if the crank is gonna fail at 250bhp, it's gonna fail whether it's a custom map or a generic map if you start pushing 300 ponies. But by getting your mapping spot on, you're minimising one factor which can lead to component failure... i.e incorrect mapping for the way your car is set-up leading to unecassary stressing of parts. It's probably the number one reason why components fail early - which otherwise would not if the car was accurately mapped. Your rods and pistons may last well into 300+ brake if mapped well, but too much ignition advance and too lean a mixture and your 300 brake rods are being thrown at 280 and pistons begining to melt....

Don't get me wrong, if only mildly tuning your car (phase/stage 1 for example) IMO generic maps are fine, as you are still well within the tolerance limits set by VAG. It's only when you start pushing towards the magic numbers that your margin or error decreases.

But who am I to argue, I know people use stage 3 Revo or other generic maps when going BT.... good for them... they are happy and map supplier is happy. Everyones a winner. I will always stand by the fact that accurate custom mapping is THE most fundamental part of any tuning when your pushing the car to the limit.... and the "one size fits all" solution just doesn't do it for me.

Raf

 

[Feel]

I think either someone's mislead you or you've mislead yourself about how VAG ECU's work wrt to fuelling, boost and timing.

You're suggesting that Revo/APR etc would map a car to the point of catastrophic failure, such that tiny differences from one car to the next would blow one engine up (excluding the fact that the ECU adapts). Either that or actually WANTING your custom mapper to push your map to the edge of catastrophic failure?

With Revo and APR you can actually fiddle/control the timing and boost yourself, so you could argue that your have more control with these generic maps than you do with CERTAIN custom maps. Other custom maps, aren't actually all that custom anyway.

ANYWAY, like you said, each to their own.

If your mapper can scale to the different MAF housing, try it and see. Like we've both been saying, talk to your tuner about what he can/can't do.

A lot of the big turbo boys (IHI's etc) upgrade to the TT225/LCR/R32 MAF and run 340-360bhp. So your standard MAF isn't going to be a restriction if that's what you meant.

 

[Koomorph]

You're suggesting that Revo/APR etc would map a car to the point of catastrophic failure, such that tiny differences from one car to the next would blow one engine up (excluding the fact that the ECU adapts). Either that or actually WANTING your custom mapper to push your map to the edge of catastrophic failure?

Not in the slightest what I am suggesting, but we'll leave it at that - or we'll be going round in circles......

A lot of the big turbo boys (IHI's etc) upgrade to the TT225/LCR/R32 MAF and run 340-360bhp. So your standard MAF isn't going to be a restriction if that's what you meant.

Just what I wanted to know, that about settles it - cheers.

Raf

 

[caney]

raf,stop farting around and asking loads of bloody questions and get it done surely whoever you are using to do the work must of explained everything to you?

 

[Koomorph]

Well said Steve..... Doug has been very helpful and I can't wait for Minhea to be let loose on it...

Will be a couple of months yet though.....

Raf

 

[Feel]

Aaaaaah, well - you'll have no problems with them then!