The tune really depends on how the car comes from the factory and the quality of the tuner, If your car is already able to maximize most of the gains from your bolt-ons even a great tuner would only be able to extract a few whp out....
But I would say a Gain of 20+ whp with just a tune is great!
I also used a Mustang dyno and went from 282whp to 304whp after a few bolt-ons Im sure with a tune I might get another 10-15whp at the most.
DAN
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-My BRZ with exhaust will decimate all if we overnight parts from Japan-
10 Civic EX Sedan- Current Daily
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