So who wants their ECU's "Chromed"?

[Greg E]

Hey guys,

If I gut the stock maf, what would be the limit on it?

No one knows yet.

[RealMcCoy]

Hey guys,

If I gut the stock maf, what would be the limit on it? I'm aiming for 450-500 awhp on a conservative dyno, I know the evo maf is a much better option.

Thanks

That would be a tuning nightmare... You would probably have to run a piggyback to do it. When you gut the stock sensor, the ouput is no longer linear to what the ecu expects. You can often have as much as 50-60% difference in correction between idle, and WOT high RPM

I'm running a gutted and ported stock sensor with my Neo. By the math, and accounting for the amount of meth I'm spraying, I should be at -45% correction. My highest correction at 6500rpm+ is -25%. So I gained about 20% by gutting it. But at idle I'm at +31%. Wading through the fuel tables making that work sounds like more fun than I want to have...

[anyonebutme]

That would be a tuning nightmare... You would probably have to run a piggyback to do it. When you gut the stock sensor, the ouput is no longer linear to what the ecu expects. You can often have as much as 50-60% difference in correction between idle, and WOT high RPM

I'm running a gutted and ported stock sensor with my Neo. By the math, and accounting for the amount of meth I'm spraying, I should be at -45% correction. My highest correction at 6500rpm+ is -25%. So I gained about 20% by gutting it. But at idle I'm at +31%. Wading through the fuel tables making that work sounds like more fun than I want to have...

No problem to tune it. remember we are working with maps, not a single table like a piggyback.

[Greg E]

That would be a tuning nightmare...

it's not.

Some adjustments to the MAF scaling table and it works great.

[RealMcCoy]

it's not.

Some adjustments to the MAF scaling table and it works great.

Cool, good to hear... I may try it out when I switch mine over. Making fuel maps to fit sounded time consuming...

[BlackStealth]

A long time ago when I had my MAF gutted, I had the problem of it not being consistent. My tune would be fine at 11.5 AFR at full throttle, a few weeks go by and then the tune goes lean 13.5 AFR!! I quickly abandon the gutted MAF route -- I did not want the hassle of constantly retuning.

[Greg E]

A long time ago when I had my MAF gutted, I had the problem of it not being consistent. My tune would be fine at 11.5 AFR at full throttle, a few weeks go by and then the tune goes lean 13.5 AFR!! I quickly abandon the gutted MAF route -- I did not want the hassle of constantly retuning.

I ran into the same thing. Air Temp was the contributing factor for that. Tweaking the air temp correction table helped a lot.

[RealMcCoy]

I ran into the same thing. Air Temp was the contributing factor for that. Tweaking the air temp correction table helped a lot.

I haven't experienced that at all... Mine has been extremely consistent. What did you find happening with the air temp? Was it not reading accurately?

[Greg E]

I haven't experienced that at all... Mine has been extremely consistent. What did you find happening with the air temp? Was it not reading accurately?

The hotter the air temps, the richer the AFR.

People gut their MAFs differently too. I'm sure if you leave the middle screen in, there won't be an issue as thats where the vortex generator is located. I played with it removed.

[dferguson]

So Greg when you are all done with the active exhaust will you post the code and detailed instruction on how to input info or will it be a complete reflash?And I guess we will need some pins and wire to rewore our adaptor harnesses?And will we wire from the original 2 pins in our wiring harnesses to two new pins on the reflased ECM?
And thanks again Greg for all the patience as some of this stuff is hard to comprehend.