I feel gains the most between 3.5-5.5K RPMs. Although they were 18hp and 24ft/lbs at the wheels, it's not a night and day difference. However, the cool features you get with ECUTek are fun. Flat Foot Shifting, Launch Control and the pedal sensitivity adjustments are great. I have 5 maps, so that helps too. Now I can toss the keys to the valet and not worry about the car getting beat on.
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