Quote from Tony_F on November 30, 2019, 5:47 pm

Hi, 406 ci set to 528 on E85, using 1200 HP Power Adder system.  Using a separate timing controller, (MSD Grid) in a drag only car. Just got the car running today, have not had a chance to do any tuning yet. But, was wondering if anyone does anything to the tune or settings when its on the 2-step? I heard the 2-step can cause false readings on the O2 sensor because of the unburned fuel, thus causing the Fitech to try to lean it out.

Thanks.