Quote:
Originally Posted by ianthegreat
My buddy and I go to the strip a lot. He drives the 370z. If anything you are advancing the timing due to the octane - it wouldn't hurt.
We basically coast our cars on empty then fill w/ around 3-4 gallons on VP109 (101 octane). BIG improvement.
Your ECU needs time to adapt. A couple WOT pulls should be good.
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VP109 is oxygenated and is 105 octane (R+M/2). Given that you can't advance the timing or increase compression most of the gain will be from the oxygen content.