09-30-2010, 07:26 AM
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#14
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Senior Member
Full Access Member
Join Date: Aug 2009
Location: Annapolis, MD
Name: Jesse
Age: 49
Posts: 130
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Unless you've done an engine swap, an xD doesn't have a VVTLi engine. We have VVTi -- no valve lift adjutment. Yes, there is a VVTLi version of this engine available... for instance, in the Lotus Elise.
Our engines have nowhere near the compression that requires or gains any benefit from premium gas. Regular gas ignites easier, and is what most engines are designed for. Engines with higher compression use premium and usually produce more horsepower... but it is due to the engine, not the gas. Premium gas is used ONLY to eliminate preignition (knocking) in high compression engines.
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__________________
-McBrew
Current car: 2011 Subaru Outback 2.5i Premium w/ Lineartronic CVT transmission. Steel Silver.
SOLD: 2009 Scion xD - BRM, 16" alloys, VSC, K&N drop-in air filter, Thule Aero roof bars, TRD sway bar, TRD short shift, TYC LED tails, Curt class-1 tow hitch, Italian leather shift & brake boots, Red Line MT-90 in the trans, Amsoil 0w20 in the engine, ATE SuperBlue Racing brake fluid.
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