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Civic Si

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Honda Civic Forum >> Your Ride >> Header, Intake, & Exhaust >> Civic Si

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Civic Si - 3/17/2005 4:49:34 PM

zx2rcr

Posts: 1
Joined: 3/17/2005
Status: offline

Hey guys a new guy here and i do not drive a civic always wanted one but thats not what i ended up with. But anyways i have a friend who owns the Si he has the stock engine with V2 and is getting the GReddy Evo II catback. WOuld it be better to get 4-1 or 4-2-1. I do not know much of anything about the civic engines so help would be apreciated.

Post #: 1

RE: Civic Si - 3/17/2005 11:00:31 PM

sacicons

Posts: 7675
Joined: 6/26/2004
Status: offline

what does he use it for? for just around town use, the 4-2-1 header will give a bit more power in the mid-range than the 4-1. the 4-1 will give a little more peak power, which is better for quarter mile.

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Yes, there's a "Replacement for Displacement". Its called Volumetric Efficiency.