Quote:
Originally Posted by Speedy
My bet is they do automatically adjust.
I'd like to know how much timing is in a stock Z tune. I've heard 23° at WOT. I've got some tools at home I'll hook up to confirm when I get time.
On 93 octane, 23° of timing and a 12.5-12.8:1 AFR would be a pretty spicy tune.
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They will adjust for timing but only up o the values in the ROM. If you want it to run higher timing with 93 octane u need to raise those values and the ECU will adapt up to them. Since the Z's are tuned for 91 octane from the factory raising the values for 93 octane allows you to maximize it.