Sorry, I meant to say gen-III truck/2002-2004 Vette, not gen-II truck...

About 2 years ago, I swapped a MAF from a 2002 GM truck into my buddies LT1'd Porsche 944 Turbo. It's about 90mm in diameter, plastic housing, with the IAT sensor built in. I rewired the connector, updated the MAF cal to reflect the frequency vs. flow characteristics from a GM truck cal and interpolated it to fit the LT1's frequency breakpoints in the cal. The car ran, but seemed to run rich no matter which way I set the cal up. Even with the MAF disconnected in SD mode, it ran rich.

Anyway, the motor broke for other reasons, and did not get rebuilt and back into the car until last fall. I was going to put the stock MAF back on, and we did some more basic tuning (VE tables and such) once, but then my buddy died. We never got to finish the car completely and his family won't let me finish the cal work. So, I never got the bugs worked out.

Has anybody ever tried to run this MAF? I seems that it would work awesome for flow, on Ls1-type engines it's good to about 475HP (400 g/s airflow) before it maxes out the frequency vs flow cal. Seems like it would work, but I had open loop issues that I never worked out.

 

Anybody?

 

I was told the extra 2 wires are just a heater circut to keep the sensor clean i dont know for sure though it was in a class i took thats what the teacher said because we were doing reference and signal tests at the MAF and one of the wires had 12v which i didnt think was right being 5v should have been there he said it was a heater circut to keep the sensor clean who knows???

 

I run a '02 Z06 MAF on my car; run it for a few years now (Since '02). As long as the freq/flow chart is correct you should be good to go.

 

That's what I figured. I think there were other issues that needed to be worked out on that motor. I think fuel pressure might have been too high, and there was some quesiton on how good the injectors were, they might have been leaky too.

Thanks, I am considering doing the same thing on my 95 9c1 (Al heads and LT4 hotcam), and thought I would ask if anybody else did this. Seems a whole lot cheaper than and aftermarket MAF.

 

That was my reasoning for switching over back then. My stocker took a crap and the Z06 was a lot cheaper (>$300 vs $120 total with the pigtail).

The only issue I'm running into now is the stock PCM limiter.... I'm going to end up building an adapter box so my PCM can see the higher flows of the Z06 and not max out the frequency chart with the new engine.

 

i run the truck maf in my 94 383 and it works perfect, i re-mapped the bin for the truck maf ,, and it is cheap new from gm around $99

 

Jay, I was reading your sig line, and I see you did a Gen-III swap as well. When you ran the carb intake, did you get it with the ingition system as well? The reason I ask is that I want to run a carb intake on my 77 Impala in order to do a NASCAR style cowl induction, but I have not found the intake available separately from the ignition, which I do not need. I still plan to run EFI, but do not want to put the TB in the front of the car.

Just wondering.

 

i have just what you need, i have an extra gm ls1 carb intake that has bosses for fuel injectors, just needs to be drilled out. and it is brand new in the box, just bolted on the engine for mock up

e-mail me for the details

jay_camaro1@yahoo.com

 

Single plane or dual plane? PM with $$$ specifics

Thanks.