The best part about the tune (to me) is that it made my z much better behaved during city driving. There was a small flat spot in the lower RPM range due to wacky A/F that the ECU never corrected for on its own. I also gained 13 WHP and 6 WTQ. The chart is in a thread in this section somewhere and in my album (from 1.5 years ago).
Goin off topic: I installed the M370 and ART pipes about 120 miles ago and it is now running lean according to Torque app. AFR is about 13.2:1 reading from the stock o2 sensors at WOT and 15:1 at partial throttle. It is my understanding that our o2 sensors report somewhat richer than the actual value as well. Time for a retune!
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some mods
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