Here's some data I logged the other day while driving. Just wondering if anything seems way out of place. Mods are in sig. I'm still running a 19# constant with my 24# injectors and its rich at idle and at WOT. We couldn't get it to run very good b4 when we changed the constant to 24... guess we need to play with the VE tables too?? Only thing changed on my chip is a little timing and disabling EGR and VATS. Well, does this even sound normal or is something WAY out of place. I'm kinda of new to this stuff, but I've read traxion's articles and alot of other stuff on here. Here we go:

65mph
1500rpm in 6th gear w/ 3.42's
TPS-1.03V
MAP-16-17 vacuum
IPW- 2.90
coolant-181
SAP-48*
BLMs'- about 110 (I know they're too low)


Base timing is at 8* on the motor. This data was at a "cruise" of 65mph. I wasn't accelerating or slowing down, and I was on flat ground. Just trying to get a little data. Suggestion/help please!! I guess I need to get my constant at 24# and start playing with my VE tables to get rid of the richness at idle?? What kind of vaccum should I be pulling at the MAP at idle? What kind of IPW should it be at idle or running down the rode? (some kind of normal range)

Thanks for any help!!

 

Your right before you do anything set the inj const correctly and then begin tuning.

If SAP is total spark, that's way too much.

Save the lean cruise, and high timing for working on little motors. 36d at a 14:1 AFR will let your motor live alot longer.

Of course, advise is for Off Road Use Only.

 

Thanks, thats what I thought I needed to do, but when we set the constant before... it ran like crap and would studder/stumble in certain spots! Were we needing to play with the VE tables some to straighten that out or what? I need to set totoal timing at 36* and set the AFR to 14:1??? Also, as for the SAP... I'm guessing thats what it is... total spark. I guess I need to read up on my scanner's info and see if thats what it is. I should NEVER get any readings over 36*???/ Thanks a lot for the help Grumpy. I look forward to learning a lot more in the next few months!

 

Also, I notice when I'm getting on it a little, that the MAP reading goes UP. I thought it was supposed to go down with throttle applied. For instance, it could be at about 16, and when i get on it it will go up to 25 or so. Is this right or do I have a vaccum leak ot WTF is going on. Thanks again!

 

Well, been scanning my car somewhere and watching while I'm driving. I notice me spark advance goes u as high as 51* when I'm kinda lugging the motor in a high gear at partial throttle. What wrong here? It shouldn'e be that high should it? I checked my current chip bin and looked at the timing tables and there aren't even any timing numbers that high. My chip is showing like 35-37* at the highest across the boards. This is about what it should be... right? I just don't understand why my scanner is showing 50* or so sometimes and certain loads/RPMs etc. Any help??? thanks!!