09-05-2012, 10:29 AM
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CC Member
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Join Date: Feb 2007
Location: Valencia,
CA
Cobra Make, Engine: BDR #89, KCR aluminum 427 windsor
Posts: 322
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Not Ranked
My KCR 427W has 612 hp, & a pretty snotty cam in it. I always run premium (91 octane in Cali) but occasionally have problems with dieseling (run-on). I dump a bottle of the cheapest octane boost I can find (typically Gumout octane boost at Walmart) with each fillup... seems to help. I don't expect any performance enhancement, but it does seem to help with the dieseling in hot weather. I realize it may be purely psychological, which is why I don't invest a whole lost of money in it. 
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R. Smith
Santa Clarita, CA
BDR #89- KCR aluminum 427 windsor, TKO-600
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