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4-2-1 or 4-1 headers?

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    #16
    Originally posted by 91cord
    Patrik.johnson: The basic tuning theory of small diameter long tubes for torque and larger diameter short tubes for High- RPM Horsepower

    Accordaffair: it depends on your step up but with a GOOD 4-in-1 header vs. a GOOD 4-2-1 header you are only really looking at about 3 to 5 horsepower difference between the two in fav. for the 4-in-1. However the engineers at Honda knew what the hell they were doing that is why it is so hard to get horsepower out of are motors....

    True. However our particular application was never intended to be a performance models. So there is horse power to be uncorked in our engines.
    FS: BNIB MFactory FD $650, PM me.

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