MAF-t problems still

[blackjacks]

So i had my low fuel trim at like 86 percent.. After a day or two its at 134 percent. All the other fuel trims are the same as always. This happens no matter where I put the settings. They always end up at 134 percent. Is my translator bad. If so I need to know so I can get a differant one. This is my familys only mode of transportation.

[TurboBob]

the low trim can be unpredictable. you can add some fuel to the idle knob, to try to combat this.

How is it running?


Bob

[blackjacks]

seems to run good. i know i have a boost leak somewhere. I still die after a moderate to high decel. Is the low fuel trim known to jump up some days?
The other problem is that at about 6k or 6500 rpms the waste gate sounds like its sputtering.

[TurboBob]

are you getting any knock at 6000 - 6500? Do you know the AF at that point or the O2 reading?

Drifting low trim can be caused by vacuum leaks, crankcase breathers, and other things. If your O2 sensor is still toggling at idle, you can still richen it a click (or even the BASE setting) as driving the trims down makes the cars run smoother.

Bob

[blackjacks]

my base is already at 1
i fixed the biss screw, so i think that i'm gonna reset the computer.
i do have a k&n on my breather vent. is there a better way to do that? I have a crushed bov. Will that make the boost break up?

[TurboBob]

the K&N on the breather will cause your idle trim to be high.

For the top end breakup, the breather will most likely not make a difference.

What is your plug gap? Did you try making it richer at WOT?

Bob

[blackjacks]

the plug gap i belive is stock.. I put pre gapped iridium plugs in it. i belive my high trim is at 89 percent or so. i'm gonna run llogs in the morn.