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      04-02-2009, 04:36 PM   #2
Noxious335
07 335i Sedan Alpina White
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Drives: 2007 335i Sedan Alpine White
Join Date: Mar 2009
Location: Salt Lake City, UT

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No one has an opinion on the matter? I can't find a similar post and there has to be a lot of people running their JB+ at 100%. It's too tempting to not do it. I know altitude plays a role in NA engines, and with supercharged engines. A supercharged engine that pushes 9 psi at sea level will push 7.5 or 8 psi at 4200 ft. I don't know about turbos though because the waste gate is set to release at the same PSI regardless of elevation. I haven't turned it up yet and I was hoping to get some feedback before I did.
The other question about the Octane Boost in a bottle is relevant to the first question. Has anyone used it in place of 93 octane fuel successfully?
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