o.k. i have the the drag gen3 kit with the vortec fmu. i am having problems with the fuel leaning out. it just started doing it. the turbo sounds like it it is spooling up and i can hear the blow off valve, but it never reads positive boost. i can stomp it to the floor, and it stays rich until it gets to 3500rpms(about when it would start boosting) and then the a/f goes in the red. it sounds like it is making positive boost, but it is not. it only leans out at wot. but it never makes boost. could my fmu be screwed up? i don't have a stopped up vacuum line, because the boost guage will go up to zero, but not past. i don't have egt or fuel pressure gauges. please help

 

no suggestions?

 

do you have an inline fuel pump to support your fmu??

 

yes 125psi

 

What kind of A/F gauge do you have? Some aren't as accurate as others. Try using an exhaust temp. gauge and see if you're leaning out.

 

i know they are not that accurate, but everything was working fine. at wot it used to stay on the rich side, now it goes straight to the lean side and the car does not accelerate. it's not a question of whether or not it it leaning out, but why is it leaning out. i ordered my fuel pressure guage last night, so that maybe that will give me an answer when i get it hooked up.


[Modified by SOHC_power, 1:11 PM 10/30/2002]