fbo + meth 335xi at 17 psi 6mt dynoed 391 awhp. I think the guy is using the wrong map for his mods but thats just my opinion.
I guess he got used to the power tho, 20 psi on rbs fbo + meth + e85 eventually didn't feel fast to me anymore lol.
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E90 LCI N54 6AT
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