Timing retard on pump fuel... how much? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 02-09-2007, 07:08 PM   #1
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Default Timing retard on pump fuel... how much?

Ive read FM base Link maps and they seem awefully conservative.

Im currently at 8 base timing and taking 6 off with the MSD, for a total of 8 degrees retard from stock, running 12 psi of boost, 93 octane fuel, 12.0 A/F ratios. No audible knock, no evidence of detonation in the spark plugs, engine running strong for 2 years and a lot of track time. Stock 95 1.8 engine.

How much are you retarding?
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Old 02-09-2007, 08:07 PM   #2
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that is fairly conservative. I'd up it to 10-12 base. You'll notice it on the butt dyno. listen/look for detonation.
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