After the first tank of regular unleaded (87), I filled up with super unleaded (93), and I've noticed much better response from the engine. Not huge, but noticeable. Worth the few extra pennies IMHO.
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J.W.
2006 yellow H3 - Pro Comp Xtreme package
4" lift, 35's, Lux, etc.
2004 yellow Corvette Z06
2002 black LPE blown TigerShark Z06
http://public.fotki.com/JWSchmidt3/
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