Since you aren't logging fuel pressure,we still don't know how much it is rising. It would have been nice if you would have been able to see what it was when you hit 5.5 psi of boost. Since you are logging the other pertinent things it would be good to know how high it gets when you are logging. Do you have a gauge that you can look at while driving the car?
Lean at wot
- Thread starter TireFryer
- Start date
Next time you feel like logging,look at the fuel gauge and then you can compare it to what the log shows.
So,that's not the problem.
TireFryer
The New Kid
- Joined
- Dec 21, 2001
Just a thought, and will confirm this in the morning. If there is an exhaust leak between the turbo and the DP flange (upstream of WB sensor), could this potentially show false "lean" WB readings? of
In looking at the data file 004, frame 2374 of 3535:
peak TPS for this run = 1.52
O2 (NB) is at 0.784
BLM = 131
MAF = 105.6
Boost= 6.0
the AFR (WB) is 14.31, but shortly thereafter, in the next few frames, you can see it drop...
thoughts?
In looking at the data file 004, frame 2374 of 3535:
peak TPS for this run = 1.52
O2 (NB) is at 0.784
BLM = 131
MAF = 105.6
Boost= 6.0
the AFR (WB) is 14.31, but shortly thereafter, in the next few frames, you can see it drop...
thoughts?
SCOOBY DOO
BASED CANADIAN PATRIOT!!
- Joined
- Feb 18, 2007
Your last file shows the your BLM's at idle of 118, AF at 15.2, NB highest is 776, MAF 7.5 and you say FP is rising with boost. Airflow is slightly high from the MAF. Data is telling me the 02 is reporting wrong to the ECM and the airflow from the MAF at idle is usually 4-6. 02 sensor is cheapest. If that didn't work, then I'd try a known good MAF.
TireFryer
The New Kid
- Joined
- Dec 21, 2001
No, Just a used one that was on my other 87
The wideband and O2 are mimicking each other. They're both saying the same thing. Your car laid down when your wideband showed 19/1 How far away from the turbo is your wideband?Just a thought, and will confirm this in the morning. If there is an exhaust leak between the turbo and the DP flange (upstream of WB sensor), could this potentially show false "lean" WB readings? of
In looking at the data file 004, frame 2374 of 3535:
peak TPS for this run = 1.52
O2 (NB) is at 0.784
BLM = 131
MAF = 105.6
Boost= 6.0
the AFR (WB) is 14.31, but shortly thereafter, in the next few frames, you can see it drop...
thoughts?
Did it lay down in 004 log?
TireFryer
The New Kid
- Joined
- Dec 21, 2001
It ran good and didn’t lay down... The wideband is about 3 inches from the exit of the downpipe into the test pipe so, probably 3 or 4 feet
There was no spark retard either. I see that there is a mid boost fuel adjustment in your chip. You could richen that up and test it again to a higher boost level.
I've never seen one installed in the test pipe,but I don't know if that's good or bad.
TireFryer
The New Kid
- Joined
- Dec 21, 2001
I completely forgot the chip had a mid boost setting! Will the chip now go into “wot” afr until I go completely wot and above 13 psi? I’ll try setting mid boost to 10.8 and see what happens... I’ll take a log also.
That's very rich,just move the number up a little from whatever it is.
TireFryer
The New Kid
- Joined
- Dec 21, 2001
The chip default wot low and high gear afr is set at 10.8.. I can move it to 11.2-5 or so...
SCOOBY DOO
BASED CANADIAN PATRIOT!!
- Joined
- Feb 18, 2007
Eric recommends leaving the mid boost alone.
