Talek
20+ Year Contributor
- 418
- 0
- Oct 3, 2002
-
Iowa City,
Iowa
So I resolved my knocking issues by richening up the maps across the board. Now I'm running a bit rich, but logging no knock, which is awesome. Right now I'm running 12lbs on my 16g w/650cc injectors, gmaft and supporting mods. The problem I've got is that when I go WOT and push my boost up to 12lbs my car immediately bogs down. Looking at the logs, the RPM graph ramps up smoothly til it bogs then it just jumps up and down til I let off. I get no knock at WOT, just the occasional 2-3 counts at weird points in mid (gonna fine tune by rpm when i have this problem fixed). O2 sensor reads .91-.93v on heavy accelleration at 10+lbs.
It could possibly be fuel cut, because I haven't had a chance to install my new fuel pump yet (the fuel line bolt is sort of stripped...), but I don't think it's fuel cut. It's not retarded timing because I'm not knocking. I dont' think it's running super rich due to the O2 readings. The last thing I can think of is that it is probably a boost leak. Anyone have any info to corraborate this? I'll go ahead and do a boost leak test anyway, but just curious.
Oh, my TPS seems to never register 100% throttle even when the pedal is mashed. Bad TPS?
It could possibly be fuel cut, because I haven't had a chance to install my new fuel pump yet (the fuel line bolt is sort of stripped...), but I don't think it's fuel cut. It's not retarded timing because I'm not knocking. I dont' think it's running super rich due to the O2 readings. The last thing I can think of is that it is probably a boost leak. Anyone have any info to corraborate this? I'll go ahead and do a boost leak test anyway, but just curious.
Oh, my TPS seems to never register 100% throttle even when the pedal is mashed. Bad TPS?
