Is my new Maft fried?

[thricestrat]

Have a blowthru setup using dejon intake, 3" GM Maf, and Maf-t. I have 750's, AFPR and a 255, and when I dial the dials where they should be the car bogs horribly and dies. I have no boost leaks... just fixed about 37 of them. The afr is crazy lean (cant drive it because of it) at idle it sits around 16.9 on the wideband. The only setting the ecu seems to like is the typical 4 - 2 with aux and base, which I would figure would richen up the afr even more so but is not. ### help this is driving me nuts.

 

[snowborder714]

Well, with the typical Aux=4 Base=2 setting, you're setting the MAF-T for stock 450cc injectors. According to your profile, you have no way of compensating for your 750cc injectors that you have installed. The settings for the 750cc's should be Aux=6 Base=2. But I'm not sure if a MAF-T works well to compensate for that large of an injector.

I would try those settings, if you haven't already.
What do you have your base fuel pressure set at (since you have an AFPR)?
Are you sure all the other settings on the MAF-T are correct?

 

[r1991_4g63t]

is it true the MAFT locks the intake temp at 75*? ive read that a couple places and that would have an effect here, not sure if it could cause your problem though

 

[DSM_PWR]

*Check your fuel pressure (w/ vacuum disconnected)
*Make sure the MAFT is connected right
*Could be your GM MAF as well

 

[thricestrat]

Thanks for the suggestions guys, have found a few interesting things. I replaced my TB shaft seals recently due to some boost leaks and I realized that my throttle plate is not shutting all the way and tryed messing with it but cant get the plate to fully close... this must be my high idle problem....gunna swap to a 1g TB. would this cause any of my lean idle conditions? also I reset my AFPR (Aeromotive) with the vac line pulled and its good to go, it was off by like 1psi. Only thing im not understanding is that when I dial the Maft into 6 and 2 the car will bog terribly and die? the car literally will not accept any other settings. I also did not have fuel cut at all before swapping from stock injectors, kinda odd? I checked out my GM Maf and i think there is something wrong with it. There are three "sensor strips" on top and only 2 on bottom when you look into it. Is this right? it was supposed to be brand new from ExtremePSI.... not sure if this is normal

Thanks guys hope to get the fixed soon!