Again, it's different strokes for different folks, for me I would like a tune so I can program a valet tune, and a few other tunes... And I see a 50/50 with people making big gains and those who don't... Most who get great gains tune it right after they install new parts
My biggest issue with the tune is that your engine warranty says bye bye... And in some cases your transmission too because if that has a catastrophic failure the dealer will say, you put too much power down by tuning the car outside factory specs (Yes, that's complete bull, but unless you have million dollar lawyers, too much time, and too much money to burn on going to court... Nissan has your balls in the palm of their hand... They'll just say no)
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