Lean condition in 3rd & 4th

stangman8825

New Member
Dec 12, 2002
89
0
0
indiana
I was wondering if my fuel pump needs to be upgraded. I start detonating in 3rd at the track and on the highway when I'm on it. I did the volume test on it right before I did my mods and it was good but barely... Timing is at 12* and I have an adjustable FPR and no matter how pressure I put on it, it still does it(93 octane by the way)... Or could this be my computer. Any help to solve my problem would be greatly appreciated