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Originally Posted by jcosta79
But the stock ECU is only going to adjust for A/F ratio, correct? Or does it do timing as well?
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It does timing very dynamically. UpRev's own tuning guide notes that even if they manually set the timing way way off, after a few pulls the ECU corrects itself back to appropriate values.
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Also, a tune gets rid of throttle pedal delay
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not necessarily in the best way, and highly dependent on who does the tune and how...
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raises the rev limit to 8K
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You don't want to do that. 8K RPM on a stock motor will eventually grenade your oil pump gear and destroy most of the engine along with it, as talked about elsewhere on these forums
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and removes the top speed governor.
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This, yes, it's part of the same settings where you put speed/rev limits per-map for e.g. security/valet modes. However, you can do this without a dyno, just a laptop and a tuner license. Not that there's really any sane place to hit 160 in this car anyways, other than a select few tracks with very very long straights.