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Old September 12th, 2011, 09:15 AM   #84
sombo
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Name: Mike
Location: Windermere, FL
Join Date: Feb 2009

Motorcycle(s): 2012 Harley Davidson XL883L Sportster Superlow

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Quote:
Originally Posted by cliff0529 View Post
Also, at 12.5:1 CR would 91 or 93 Octane be enough to keep it from detonating?
Well if it helps any, the pre-gens are 12.4:1 from the factory and run perfectly fine on regular. Never had any sort of detonation that some think you would get. Not sure if the same would apply to the new-gens with the different tuning though.
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