Car has slowed down alot, why?

[92TurboGS]

Ok i have a 92 eclipse automatic, here is what it has, 16g,450cc inj,255 intake,free mods,test pipe. The car was running good with a stock pump at around 13-15psi, than the pump started to go bad, fuel pressure would drop back to 40 or so under bigger boost but car still pulled nice but i didnt beat on it. I let the car sit for 2 days drove it again and it felt dog slow. I put the 255 pump in it, hold pressure great, but still slow, so i checked the plugs, one plug the electrode was half melted, i changed them all turned back the timing a touch. still slow, i did fix a little boost leak however. I disconnected the battery to reset the ecu, could it be the computer is not used to the car yet, with no boost leak or fuel pressure. And the screw on the throttle body, what should it be set to? It was leaking boost so i took it out to check it, it may be set in a different spot now, could that be it? Thanks

 

[-=TWITCH=-]

boost leak make sure you check really good, do you have a logger what are you reading

 

[92TurboGS]

i checked for boost leaks, found some around throtle body and elbow, fixed those, but it sill leaks some air around the throttle body arm out the ends, i dont have a logger so im not sure if its ripping timing out or not or fuel.

 

[92TurboGS]

Well i did a compression test and its 140-130-145-145 i think, thats what it was, but the car runs fine now, has its power back, im thinking the computer was leaning it out because i tryed that fmu on it and the fmu bupmed to pressure to 80 psi and stuck, so the ceu cut the injector pulse down maybe, anyway it runs fine now, i checked o2 voltage and its usually around 1.0 to .95v,

 

[jw]

You really put on the FMU? My guess was your car will run like sh!t if you put it in. Seeing the O2 voltage just confirmed it .

 

[92TurboGS]

I had a problem , the fmu was bad,was on the car for a few minutes and took it off, with no fmu on the car runs around .95 to 1v, maybe because the 255 pump.

 

[Awdboost]

You need some kind of fuel control dude. You can't expect to run that rich and make power. If you runn to rich you will not make power. You want that voltage to be around .90 Some people can run .87 some need to run richer at .92 Depend on the car.