Quote:
Originally Posted by Todd Hoven
He most likely was lean and had to much timing with the 11, and just right with the purple. plus sometimes a car will pick up .03 from the first to the second run of the day. No way Sunoco purple makes the same power as C11. I've seen dyno results. Just my 2 cents.
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Todd, I dynoed both fuels back to back and the c11 was 3 hp better, but the air fuel ratio went down with the Sunoco. I didn't have the air bleeds with me to tune the carb for the Sunoco. I think some tuning would have produced an even closer result.