I recently ordered a MAF Translator (for evo), and a 3" gm maf sensor.

When I remove the stock evo MAF, and setup the MAF Translator in blow through setup will I have to readjust the MAF scaling in ecuflash?

If my tune is 95 percent tuned to run correctly, will I have to retune everything with the MAF transalator?

Thank you in advance,
Done

 

You have a few options... you can dial in base settings for the MAFT and then re-scale the MAF within EcuFlash, or, you can use the MAFT's scaling adjustments to accomplish the same thing.

 

No Maf rescaling.

You may have to adjust the Idle trims on the MAF T mine was reading higher at idle than it did with the stock Maf. Log your trims and make sure if your flashed for larger injectors and you have the Maf T first gen translator set Aux to C and the base around 2.

 

thank you, Ill give that a try.

I am already tuned for 780cc injectors. So i will set:
Aux to C
Base = 2ish

 

Do not rescale your maf. I really wish that wasn't even an option because most users do more harm than good. Take note to your current fuel trims and AFR at WOT. Set up the MAFT as per the instructions for a STOCK INJECTOR CAR. Adjust the low/mid/high on the MAFT so that your fuel trims are about what they were before and adjust the MAFT so that your WOT is about what it was before. At this point you should NEVER adjust the MAFT again, all adjustments should be made in ecuflash from this point on.

 

OK, I need help here!

I have a 2.4L and am running an EVO ECU, and a MAF and translator.

When I first got everything running I set the AUX - C and Base- 2 and that is where it sits. I scaled my injectors and got the trims close, within + or - 6 basically.

I started to tune the maps. At 10psi I was hitting around 220 load, sometimes spiking to 240 on a cold day. I was planning on turning up the boost and rescaling the maps.

Now it just rained and the temp dropped quite a bit here in NC. So its humid and colder (maybe 15-25 degrees) than when I was tuning previously. And I'm hitting 300 load when I hit 10psi. I figure I can still rescale my maps to compensate, but at 10psi and 300 load whats going to happen to the load when I hit 20psi? That would put me way over what a normal load should be when boosting. Basically I need help or suggestions. I was thinking of turning down the WOT knob to bring down the load when in high boost and just tuning around it. A couple people have suggested that I adjust the MAS scalings, but I haven't done this before. I figure somebody has ran into this problem before and solved it.