Hi, i tested yesterday HPtuners in an AUTOMATIC 2013 g37 here is the results: in 3rd gear from stock 267.2hp to 279.6hp and final pass in 4th gear of 292.3hp. The only thing the car have is exhaust from the manifolds to the back.
Now i need to fix the delay in the throttle to get better 60 foots on the track.
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