no timing advance at WOT

[Boosted_Curse2]

Mods are up to date in my profile. My fuel trims are dead on zero when i hit WOT. Tried plugs, found a great deal on COP swapped those in to eliminate the wires being bad. Adjusted the TPS today, was at 2% all the time, is now at zero where it should be. according to my logger, i have up to 34 degrees of advance at anything under 75% throttle. after that it cuts the advance back to 10, then when I hit 4500 rpms or above it will drop down to 2 or 3. Did a boost leak test last weekend and nothing.

closest I have gotten so far, i have my boost gauge t off my FPR on the end of the fuel rail. that hose popped off my intake manifold yesterday, and one more time today, when that come off, i have my timing advance back. I think a boost leak test would have revealed any leaks in even the boost gauge lines.

I also have a very small random miss at idle, or if i slowly raise the throttle through the rpm band. new plugs, and COP didn't fix it, does it hot or cold.


any one have any input? I'd GREATLY apreciate it. I'm tired of my car feeling as slow as a geo

 

[Boosted_Curse2]

any one?

 

[HIGHPSI4]

Knock sensor.

 

[olmytsi]

Fuel trims don't affect wot.
You will have alot of timing at part throttle and idle.
Can you post a log of wot from 2500 to redline? Show rpms and timing (and 02 sensor if you want). It's hard to tell if its the knock sensor with a 2g logger since you can only see timing and not knock.

 

[Boosted_Curse2]

replaced the knock sensor already that was my first thought.

turned out to be my maf translator. a certain friend of mine wanted to see what would happen if he turned the base knob back to 1 so my injectors were set for smaller injectors. He won't be in my car again

 

[spooled_u]

I'd kick him square in the nut satchel for pulling something like that...

 

[olmytsi]

Damn...could have cost you a motor.