Quote from mrennie on September 17, 2019, 1:32 pm

I'm currently running the Fitech 600hp system w/o power adder on a pretty much stock 1977 Pontiac Trans Am with a Pontiac 400. The system runs great below 170 degrees in the summer time. Once I approach 180-200 degrees taking off hard is difficult, by difficult I believe its still loading up and taking off like a pig. I've reduced fuel under the accelerator pump setting to -40%. The fast accel is set at 0.0% at 170 degrees. Has gotten better just not sure how much further I should go. I think the system is really over kill at this point, its probably realistically putting out maybe 250 hp. I don't know what to try next, I'm new to the fuel injection and tuning game. Thanks for any help! **Edit** on the way home to day I accelerated hard over 190 degrees and the AFR went from 13 to 10 and the back up to 12-13.