Re: dynoed a 2008cc motor

[Riley McDowall <roog@home.com>]

At 1:58 PM -0400 4/20/00, 16v Jason wrote:
>And I agree with Daun-- I don't think there's a tenth of a HP to be gained
>by aftermarket exhausts.  2.25 inch diameter exhaust tubing is *more* than
>sufficient for a 1.8 liter engine-- and certainly sufficient for a
>2.0.  For _seriously_ tuned 2.0 (and above) liter engines, a small amount
>of power might be gained in the very top-end, but without the backpressure,
>probably at a sacrifice to low-end torque.

My $.02:

On my car, which is a built 2L, I noticed some very nice midrange and
top-end gains from replacing my exhaust.  I went from stock tubing + stock
muffler, minus resonator, to a custom 2.125/2.25" system with a generic
(but not Dynomax) straight-thru stainless muffler.  I'd say the gain was
around 5-7hp off the top of my head, but I felt more power as early as 4k.
Didn't lose anything down low, either!  Very cool.  I'll be back on the
dyno again before waterfest, but it'll be with a different set of cams so I
won't be able to do an A-B comparison :(



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