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Exhaust query
Numb nuts - 2/1/09 at 09:31 PM

Hi all

I am running my Velocity XT 1.8 Zetec (130 ish bhp) with the standard (Velocity) 4 - 1 exhaust manifold. I intend fueling it via bike throttle bodies.

I've been told it would run better with a 4 - 2 - 1, is that the case?

Steve


will121 - 2/1/09 at 09:52 PM

thought in principal 4-1 is for top end 4-2-1 for better mid range, but dont know if its really worth while expence of a change


clairetoo - 2/1/09 at 09:54 PM

You would need a good rolling road / dyno session to see the difference