1995 Impala SS 383CI
234/242 575/595 112 cam
30lb injectors
ported lt4 heads

Anyways, im really new to this whole computer logging etc. I have two files, one is the complete contents of the PCM in a .lt1 file, and the other is an excel speadsheet log.

I graphed the 02s at WOT, and it looks like it is running rich to me, but im no expert. I would also like to know your thoughts on the BLMs and knock retard.

.lt1 file here

Data Log here

Any tuning advice or anything at all would be helpful.

 

TTT since it got bumped way back overnight

 

BWAH, excel. I cant stand it. Its Fred's preferance but i want a datamaster file to diagnose stuff. I'll stop my whining now


Your blms look ok, you are on the rich side, and you are getting a decent amount of knock. I assume this is a mail order tune? It looks like some tweeking needs to be done, and/or get a dyno tune.

 

Thanks ken, I might waste one of my free 20 logs on dataMaster just to appease you .

The tune was done by a buddy of mine with lt1Edit (maybe cats i forget), but we were in a hurry so we didnt have anytime to log and re-adjust. So basically its the same as a mail order, lol.

Anyways, Im personally ordering CATS here in a few days. I figure if i can get the car leaned out a little, and tune out the knock, i could pick up a good 20hp or so. Hmmmm, maybe some 11 sec NA timeslips too Car went 12.8 at 110 partial throttle first part of track, street tires, and a crappy 2.1 60. It has some potential for sure!