Originally Posted by BLKFIN
Here is the same basic set up....I have the Code 3, Needswings, and LET Tune and it was hotter outside. Jerry at LET asked me to send my ECU back so that he could lean it up on the bottom end. I am waiting to to get 240's Manifolds before I send it back to him.
According to the air/fuel on your dyno sheet, you are already running lean, so why would LET want to make it even leaner? Above 12 should be more than enough without causing any problems.
