Quote:
Originally Posted by brisance
I don't see any exhaust evacuation fans in those pics. From what you've said about that Honda motor being worked on at the same time it might be worth a few extra HP if the air was clean.
What fuel was used? I know the M3 has the ion sensors on the plugs... was any other knock monitoring device used?
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91 Octane fuel, Chevron specifically. Got there with about 1/4 tank and didn't use much because I still managed to drive home on it
I was listening for knock audibly and couldn't hear a single ping. Reading data from the car afterward didn't show much timing retard. We did have a pretty massive fan in front of the car, and yes I would have loved it if there was less exhaust gas re-circulation!