[Squidward]

Originally Posted by JLMounce

What cam are you running in the car? For what it's worth, my idle AFR is set at 14.1 and I run my WOT fueling closer to 13:1.

General rule of thumb is leaner will produce more power. Based on what you're saying here, it sounds like you may currently be at optimal spark advance. Might focus instead on fueling.

Have you run any logs of your runs? Running logs for the pass and comparing specifically intake air temp and the resulting cylinder temp can help equalize runs where you may be losing power simply to added heat if you're hot-lapping.

One more thought here. If you replaced a poorly tuned carb with the FiTech, it's possible that you may be increasing combustion efficiency by way of proper fueling and better spark control. It's not out of the question, that reducing timing may increase power as a result.

I tried richer because it was safer. I picked up a little bit of mph with the changes, so I thought I might be going in the right direction.

My carb was pretty good. It was a Quick Fuel 780 vac secondary. I simply wanted efi as the next phase of the relationship. I never got a chance to completely tune the jets for WOT, or tune the rate at which the secondaries opened up.

Cam is a Voodoo 702, 219/227 on a 112 LSA.

I see what you are saying about intake air temp. The 2nd of the 2 logged runs was a tenth slower, and I compared intake air temp at 3k rpm in first gear. 2nd run was 4 degrees warmer.