Any opinions? Sorry if the data seems weird, but this is out of my Mac Mentor at work, I was writing this down the best I could. This is a 90-92 SD setup.

750 RPM
188* cooling temp sensor
0.51v TPS
2.3 ms injector pulse width
1.7v map voltage
13 iHg MAP
closed loop 0.43v-0.65v O2 voltage
open loop 0.2v-0.3v

 

*Bizzump*

 

The open loop O2 loks a tad low (lean), other then that it looks OK.

RBob.

 

Thats what I was concerned about. Thinking about bumping the FP a few pounds.

 

How do the BLM's look? If they are adding fuel it may be better to tweak the MAF tables. If it is lean across the board the fuel pump may be going out.

Has the MAF been descreened and/or gutted? Is there any driveability issues?

RBob.

 

Its a SD system. And like I said in my first post, I did all this with a Mac Scanner, so it doesnt display that. I dont have chip tuning stuff yet...

 

Oh, yes, you did say SD system. I looked at the sig and went: '89 oh a MAF. I didn't know what you meant by Mac Mentor. . .

RBob.

 

A RS with a 350 TPI.

 

In all honesty if the engine is stock and there are no drivability issues I would leave it be. Or,at a minimum look at the fueling at more then idle before making any global changes.

RBob.

 

Weird. Most stock bins run rich at idle, lean everywhere else (that I have seen). I think you might want to scan some driving and see whats going on. Time to make a cable and download moates, or tunerpro.

-- Joe

 

Its not. I just get bad mileage, and I feel there is some power left in it to get out.

When my friend comes back from "vacation" he is going to send me a cable to borrow so I can get some data from you guys.