Join Date: Feb 2000
Location: Detroit, Murder City
1) Make sure your base timing is set correctly. Also make sure whatever custom programming you may have done has enough spark lead down low.
2) Put a wideband on it and find out exactly what a/f it's running at before guessing that "it looks lean".
Calibrated Success, Inc. EFI Training, Tuning, Consulting
Engine Management: Advanced Tuning