Twin nozzle in up pipe, 10:1 AFR, 27 PSI, 18.5 timing on my set up. Been as rich as 9.7:1 AFR but car slows down. Haven't tried to lean it down.
I have seen IAT's down in the 50's to start the pass and end in the low 70's. I do have the GN1 intake with a .800" spacer versus a stock intake which may be a factor
Are you adding any fuel to the front cylinders? It doesn't look like you are using a power plate with the spacer and GN1 cast intake, is this true? Thanks
Datar