Here's the dilemma,
I just switched over to the new 3.5in blow through style maf meter from professional mass air systems aka (pro-m). Since I put this meter on, the car won't idle, has no drivability, and just flat will not stay running. Now the meter was calibrated for my injectors and the new blow through is supposed to be the hot ticket for procharged cars. I also don't understand why the meter has six wires leading into it as the stock units only have four. The wires break down as follows E (temp signal) A (12v power) B (ground)
C (maf signal return) D (maf signal) F (temp signal return).
Now A,B,C,D are the same as the old meter but the temp signal wires are for WHAT?
I'm pulling my hair out, anybody have any suggestions?
Because I've called PMAS about five times in the last 3 days and they won't return my calls, seeing how their tech dept. is only open 3 hours a day (what a joke):mad: :mad: :mad:
You should use the standard 4 wires on those. I have the same tube you're talking about and I use the "new" plug which was found on later mustangs and such, but I assume you have that already.
A-D should be the only ones you need to use, I don't have the others hooked up on mine and it works great.
The mass air is set up for BLOW THUR? When set up for blow thur they will run rich.
Only use the center 4 pins. THe outer pins are for the air inlet temp.
So if it runs rich at idle how do I compensate, and do I need to have the ECU tuned? I didn't have this problem before I put this meter on, as I was using a 76mm C&L and 30lbs injectors. I have hooked the pins up exactly the way the other meter was set up excluding F&E, and the car will not idle, or drive without bucking and stalling. Also I heard that the egr being unplugged can cause the ECU not to read the MAF, is there any truth to this?
(mine has no egr)
The EGR does not effect the MAF voltage. THat being said what computer are you using?
You can adjust your fuel press down @ idel to clean it up some. What fuel press reg. are you using. Is it BOOST REF?
I have the aeromotive boost reference regulator. The computer is an A9L. I finally spoke with PMAS and they said I must get the ECU tuned for the 50lbs inj. As the voltage signal to the meter is to low at idle.
I got your PM and replied to it.