NEED FAST ANSWER!!! 2g MAS compensation with afpr...

[90 GSX]

I got a dejon intake, 2g mas, a new chip for my injectors and mas and an afpr. I put all of in on this weekend. The afpr is an aeromotive and works perfectly. However, when I started my car, the maf hz on my logger would drop down to 0 every few seconds. The car barely builds boost and bucks and surges down the road. I'm pretty sure the mas is screwed... I want to keep my new chip though because it has new timing and a/f maps that I have been anxious to try. Can I use my 1g mas with my 2g mas eprom program if I richen up the car using my afpr??? Like say turn up my base fuel pressure ~20% or something like that. Is that feasible???

 

[Kevin Jewer]

The 1g mas should read "richer" than the 2g MAS, so you should have to reduce fuel pressure. If my math and thinking is correct, you would want to run 25 psi base for a 1g. But this is some shady tuning, try it carefully. It may get the car driveable again, but I would go tearing it up until you get things back to the way they should be.

 

[90 GSX]

My calculations came out to 25 psi too. The fuel delivery vs. pressure is exponential aparently. I tried it and drove it around the block, DOES NOT WORK (for those who may search and try this in the future).

The car ran shitty... It was running REALLY lean. I drove it down the street and turned right back around. I think the mas reading was too low so it was pushing me into higher a/f and timing maps.

 

[scottsee]

What does it do with the MAS dissconnected?