My Evo 8 Maf conversion!

[SkortchGT]

Originally Posted by DCIV

a tuner could do this in about 2 pulls. I am sure the stock mas does bottle neck some but its no where near 400whp.


Coop

I don't know at what point the stock MAS becomes an outright bottleneck for power (there are a bunch of posts arguing this), however a bigger MAS that flows more then stock definitely provides gains over the stock MAS at any power level.

I've read a bunch of threads throughout the years (mostly on the ARC2), where people have switched to the ARC2 & bigger MAS option, and immediately noticed gains over the stock mas. There was even one about a near stock car with 9bs showing gains. Others were everything from 13gs up to TD05 flavors. I've seed the MAFT guys reporting the same gains.

From everything I've read, it seems as though you can't go wrong & gain a bit of power when getting rid of the stock MAS, regardless of your power level.

[DSM Performance]

Originally Posted by DCIV

a tuner could do this in about 2 pulls. I am sure the stock mas does bottle neck some but its no where near 400whp.


Coop

Like I said earlier it is not about the flowing capacity (the size) but about the reading capacity in Hz, the Evo 8 Maf is to be more accurate over 2000Hz.

[DCIV]

Originally Posted by SkortchGT

I don't know at what point the stock MAS becomes an outright bottleneck for power (there are a bunch of posts arguing this), however a bigger MAS that flows more then stock definitely provides gains over the stock MAS at any power level.

I've read a bunch of threads throughout the years (mostly on the ARC2), where people have switched to the ARC2 & bigger MAS option, and immediately noticed gains over the stock mas. There was even one about a near stock car with 9bs showing gains. Others were everything from 13gs up to TD05 flavors. I've seed the MAFT guys reporting the same gains.

From everything I've read, it seems as though you can't go wrong & gain a bit of power when getting rid of the stock MAS, regardless of your power level.

Your exactly right. Bigger mas is going to let more air in and most 99% of the time provide more power. My argument is 400whp is a horrible number to say the stock mas is the bottle neck. As we have seen time and time again ppl with big turbos make great power with stock mas and be over 400.

I guess the only way to really prove how big one would be is to go a mas run with a set up and then switch to speed density and see how much you gained. I do look forward to seeing back to back runs or some sort of evidence that this evo 8 maf will make more X amount more power is all.

Coop

[SkortchGT]

Originally Posted by DCIV

Your exactly right. Bigger mas is going to let more air in and most 99% of the time provide more power. My argument is 400whp is a horrible number to say the stock mas is the bottle neck. As we have seen time and time again ppl with big turbos make great power with stock mas and be over 400.

I guess the only way to really prove how big one would be is to go a mas run with a set up and then switch to speed density and see how much you gained. I do look forward to seeing back to back runs or some sort of evidence that this evo 8 maf will make more X amount more power is all.

Coop

I agree, 400whp isn't touching any limitations of the stock mas. I'd also like to see back to back runs showing the EVO8 maf having an edge over the stock maf.

[DSM Performance]

I never said the Evo 8 maf will flow more air, just said that the reading capacity of the Maf (in Hz) is more accurate pass 2000Hz.

[SkortchGT]

Originally Posted by DSM Performance

I never said the Evo 8 maf will flow more air, just said that the reading capacity of the Maf (in Hz) is more accurate pass 2000Hz.

That's pretty cool though, nice work you did fitting it in the stock tubing and wiring.

[DSM Performance]

Originally Posted by SkortchGT

That's pretty cool though, nice work you did fitting it in the stock tubing and wiring.

Thanks for the positive comment. I just wanted to share my experiment if it may help someone.

[uhlig]

The physical size of the MAF isn't the problem, the EVO MAF actually looks smaller. Anyhow, (I think) the argument of this thread is compensating for injector size by manipulating Karmann data- the Evo MAF is capable of flowing more air before hitting fuel cut (when the stock ECU runs out of fuel maps and just shits out).

I think it's a great idea since using a GM MAF will result in poor tune reliability. More so in the colder parts of the U.S. than the south, you will constantly have to retune them around here.

[OwnGTP/WantRTTT]

Originally Posted by uhlig

The physical size of the MAF isn't the problem, the EVO MAF actually looks smaller. Anyhow, (I think) the argument of this thread is compensating for injector size by manipulating Karmann data- the Evo MAF is capable of flowing more air before hitting fuel cut (when the stock ECU runs out of fuel maps and just shits out).

Exactly. And perhaps it isn't to the point of hitting fuel cut (i.e. "maxing out the MAF") but at the very least providing better resolution with what looks to be a more acceptable correction factor than the stock MAF. Anything that can be done to minimize the amount of correction to run larger injectors on a piggy back is helpful due to timing and response/tip-in settings.

Nice work DSM.

[DSM Performance]

I just talk with Mellon, he's on evolutionm.net too, and he's running a 700WHP evo (so far) with stock MAF (and stock ECU).

So if ECM tunning delivers this fall the EPROM conversion package, anyone could do that EVO 8 Maf conversion and run, for example, a twin E3 16G set-up (and similar) and keep the stock ECU/stock MAF!

I've ran speed density, GM MAF and stock MAF on my DSM and for me running stock ECU (with DSM link) with stock MAF is what I preffered hand downs for my all season daily driven car.