I finally got time to install my profec b boost controller and its awesome. easy to figure out and all that good stuff that makes greddy great. Anyways, I got the boost set to 10psi but when I hit 10psi at like 5k rpms my engine starts to bog down. Kinda like its not getting enough gas but my fuel pressure is 120psi at 10psi. I dont know what to do.

I just bought a different FPR in hopes to fix the problems that the hahn racecraft one has. If it doesnt fix my fuel problems then I know its the injecters not letting the gas through but stock injecters should beable to handle 10psi right?? maybe I should drop it to 9psi?

On a stock bottom end I wouldn't run more than 8psi unless you have race gas. It just depends on how long you want your engine to last.

I would think the engine bogging down would be from too much fuel, not too little. The car should feel faster as you lean out in higher RPMs.

-Jeff
1999 Mitsubishi Eclipse GS-T'd and HRC'd

http://gs.dsmpower.com

sounds like detonation. betta turn down the boost or your car will be sittin in da shop like my GSX. :P

Chris Dishmon
chrisdishmon@hotmail.com or
chrisdishmon@yahoo.com (pretty original, huh?)

http://www.threebrain.com/weeeeee.html

1990 GSX (14.1 in the 1/4 mile, so far)
1997 RS (it just looks neat)
http://www.homestead.com/klipzracer/index.html

The stupid fuel pressure regulator is all screwed up..I think you may be right on the pressure being too high because I am just now starting to get a lot of backfires. How the hell can I lean it down??? It only happens at like 5-6k rpms.

SAFC is the best way to lean things out in the higher RPMS.

THe problem with a raising rate FPR is that it is only adjustable one way. an SAFC lets you control your fuel curves throughout the RPM range.

-Jeff
1999 Mitsubishi Eclipse GS-T'd and HRC'd

http://gs.dsmpower.com

I use the S-AFC and everything but there is a problem. The damn FPR is always changing what pressure I get. So no matter what the AFC is set at it is always wrong because of the FPR. I cant wait til I get my new one so I dont have to worry.