ok, im putting a 350 mass air TPI in my 91 S10 (i know i know, its not a 3rd gen, but i didn't where else to go for advise) the motor has (will have) a T-78 turbo strapped to it, large cam, etc. i've heard mass air has a lot of small problems, and speed density is much better, but i have also heard speed density doesn't work with large cams, and i have no clue if it works with forced induction. i wanted some input on that aspect. i was also curious about using other maf sensors. i know DSM's (mitsubishi/eagle) use lt1 or ls1 maf sensors, and i was wondering if i could on my TPI due to the higher flowing, and cheapness. one last thing this turbo makes about 800+ HP an a 6 cylinder supra, im not sure what it will make on my 350, but any suggestions for computer tuning???

 

You can use a stock MAF, or a MAP sensor for your project. You cannot use a LT1 or LS1 MAF on the older ECMs used in our cars.

A 2-BAR MAP sensor would need to be used with any boost. Search the archives for that topic.

 

and the 2 bar map sensor is for speed density correct?

 

The 749 (Syclone) ECM is the ECM that can deal with the 2, and 3 bar Map sensors.

 

*** i hate you.


check out turbo sunbird ECMs too. i think thats what Sy/Tys use, and it probably be chaper if you can find one.

 

i'd check into the mass air project a bit more. i've seen quite a few with an LT1 maf conversion. i don't recall who makes the conversion, but you're obviously going to have to be programming the prom specific anyway so i'd check into that first and use a 3 bar map sensor which as i recall was used on the tta.

 

Head on over to the power adder board and the diy prom baord. more specific info over there