Results of CGT Exhaust Experiment

[edkellock at juno.com]

The last configuration is what I have on mine.  It is loud enough to
enjoy and quiet enough to live with.  Power output is good throughout the
rev range.

Ed
Colorado Springs

On Tue, 13 May 2003 8:24:59 -0400 David <duandcc_forums at cox.net> writes:
> Patient: 1987.5 CGT (NG engine otherwise stock). Proceidure: Cut out
> bad center muffer, replace with traditional glasspack. The rear
> muffler was already removed and replaced with pipe a while back. So
> now the only silencer is a glasspack.
>
> Results: FANTASTIC! Nice LOW rumble under 3,000 RPM, sounds like a
> screaming banche at higher RPMs at WOT. At highway cruising speeds,
> it is only somewhat intrusive, but not to the point of annoying me
> or people in surrounding cars. I did make a guy in a 5.0 look over
> to see what the noise was (was reving out at WOT). Also I noticed
> that the engine seems more willing to rev out. Before there seemed
> to be no real reason to rev past 5,000 RPMs. The engine just didn't
> seem to make any more power, just noise, beyond that point. Now, it
> revs much easier and seems to actually be making power up to 6,000
> (have never pushed it past 6,000).
>
> The tone is perfect IMHO, but I would ultimately like to find a way
> to keep the same tone but lower the decibles. This exhaust project
> was "temporary" as I'm quite sure the whole system will need
> replacing in the next 6 months. The long term plan is to do a 2.5"
> cat back system, with glasspack AND rear muffler. I would think that
> by having the glasspack as the "resonator" and a traditional
> (high-flow?) rear muffer I should be able to keep the tone about the
> same, just quieter. Or at least that's what I hope will happen.
> Anybody care to comment on my plan?
>
>
>

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