A tune will optimize the performance with all your parts. The average upper end HP gain is about 10-15 HP, but the important things you achieve with a tune are to clean up your AFR and improve low and mid-range torque, which will give you that butt dyno feeling. Other things that can be done during a tune are: alter the redline (if necessary), eliminate the speed limiter, and/or program a valet mode. It is well worth the money, even if your car is stock. If you plan to do any more performance mods shortly, it might not be a bad idea to wait, but if you're done for a while, then get a tune done.
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2012 GT-R Black Edition Jet Black
2010 370Z 40th Anniversary // SOLD
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