Skip to main content ↑ ↓
Topic: Mass Air Problemsssssssssssss (Read 1271 times) previous topic - next topic

Mass Air Problemsssssssssssss

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:
1986 bird, 306, Dart heads, 550 lift cam, exp. intake, 50lbs injectors, 76mm C&L MAF, Procharger D1R blower 14lbs, 3 core intercooler, 55shot ZEX N20, tremec 5speed, 3.73 gears, auburn pro posi,headman full length headers, 3" exhaust
custom chip by 5.8FastCat

[SIGPIC][/SIGPIC]1955 bird 351w, AFR 185 Heads, 580 lift cam, D1R  Procharger 10lbs tremec 5speed, 3.92 Gears

2007 Hayabusa, R-22 pipes, K&N,  Power Commander
192hp


"Imports are like tampons, every p@$$y has one"

Mass Air Problemsssssssssssss

Reply #1 –
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.
Willpower is no match for Horsepower.

Mass Air Problemsssssssssssss

Reply #2 –
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.




SCT Tuned by Me(Greg@SpeedyDyno.com)

E.T. 10.28 @ 136.5 MPH 1/4 mile: List of Mods; 351 EFI, AFR heads,AOD,Rousch 13in frt brakes,11in rear brakes, AirRide Tech air ride system, Sub frame connetors,2400 RPM stall, 3.50,BBK shorties,T62PT Turbos  air to air intercooled, Home built kit.
Car weights 3705lbs without driver:burnout:

Mass Air Problemsssssssssssss

Reply #3 –
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)
1986 bird, 306, Dart heads, 550 lift cam, exp. intake, 50lbs injectors, 76mm C&L MAF, Procharger D1R blower 14lbs, 3 core intercooler, 55shot ZEX N20, tremec 5speed, 3.73 gears, auburn pro posi,headman full length headers, 3" exhaust
custom chip by 5.8FastCat

[SIGPIC][/SIGPIC]1955 bird 351w, AFR 185 Heads, 580 lift cam, D1R  Procharger 10lbs tremec 5speed, 3.92 Gears

2007 Hayabusa, R-22 pipes, K&N,  Power Commander
192hp


"Imports are like tampons, every p@$$y has one"

Mass Air Problemsssssssssssss

Reply #4 –
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?




SCT Tuned by Me(Greg@SpeedyDyno.com)

E.T. 10.28 @ 136.5 MPH 1/4 mile: List of Mods; 351 EFI, AFR heads,AOD,Rousch 13in frt brakes,11in rear brakes, AirRide Tech air ride system, Sub frame connetors,2400 RPM stall, 3.50,BBK shorties,T62PT Turbos  air to air intercooled, Home built kit.
Car weights 3705lbs without driver:burnout:

Mass Air Problemsssssssssssss

Reply #5 –
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.
1986 bird, 306, Dart heads, 550 lift cam, exp. intake, 50lbs injectors, 76mm C&L MAF, Procharger D1R blower 14lbs, 3 core intercooler, 55shot ZEX N20, tremec 5speed, 3.73 gears, auburn pro posi,headman full length headers, 3" exhaust
custom chip by 5.8FastCat

[SIGPIC][/SIGPIC]1955 bird 351w, AFR 185 Heads, 580 lift cam, D1R  Procharger 10lbs tremec 5speed, 3.92 Gears

2007 Hayabusa, R-22 pipes, K&N,  Power Commander
192hp


"Imports are like tampons, every p@$$y has one"
 

Mass Air Problemsssssssssssss

Reply #6 –
I got your PM and replied to it.




SCT Tuned by Me(Greg@SpeedyDyno.com)

E.T. 10.28 @ 136.5 MPH 1/4 mile: List of Mods; 351 EFI, AFR heads,AOD,Rousch 13in frt brakes,11in rear brakes, AirRide Tech air ride system, Sub frame connetors,2400 RPM stall, 3.50,BBK shorties,T62PT Turbos  air to air intercooled, Home built kit.
Car weights 3705lbs without driver:burnout: