"Out of curiosity, how were the pipes configured (e.g. where and how many
bends, did you utilize a crossover pipe, etc.)? "
Factory cats were gutted and welded back in factory pipe, the end of teh Y
was cut and the 2 pipes ran under the cabin, there was a H pipe built into
it and the factory paths were followed from the rear split to the mufflers.
It was as clean and correct as possible, it just didn't work with a stock
program or the Superchip programming I had......since this was done back in
1999 I didn't have access to all the custom computer stuff that is available
now. Maybe someone else will have better luck with the newer technology.
Rick Glass
'99 SF 100k Flowmasters Kirk'd
----- Original Message -----
From: "Adam Parrott" <parrotta@usa.net>
To: <shotimes@autox.team.net>; <v6sho@yahoogroups.com>
Sent: Tuesday, August 29, 2006 12:35 AM
Subject: Re: [Shotimes] new y-pipe purchase
> Coming in late after a busy weekend to close out this thread ...
>
> Ron Porter wrote:
>>> Opening up the exhaust system n a small /a engine like the SHO will
> probably always show a peak HP increase on a dyno, but it will be at the
> expense of killing the torque below that point. And you can't get this
> back
> with EEC tuning. <<
>
> Since a properly-designed and properly-tuned exhaust system (speaking in
> terms
> of pipe diameter and geometry only) will ALWAYS help contribute to maximum
> engine power output and should always show an overall gain when compared
> to
> the original factory system, I have to disagree with you on both of those
> points. Furthermore, as Bill pointed out in an earlier post, recent
> advances
> in EEC tuning have made it possible to "tune out" many of the exhaust
> system
> faux pas that were previously and harmfully irreparable.
>
> In short, Ian was correct when he recapped my previous posts by stating
> that
> a) backpressure is NOT necessary when it comes to making power, b) in MANY
> cases, the torque losses that are normally observed from a catless Y-pipe
> or
> other exhaust modification can be gained back with some degree of EEC
> retuning, and c) it is important to consider the ENTIRE exhaust system
> (and
> not just one component - e.g. the Y-pipe) when considering, designing and
> implementing exhaust system changes.
>
> Rick Glass wrote:
>>> I did true dual 2" pipes all the way back (to what resembled mufflers
>>> with
> a pipe straight through them) on my '94 and it had NO TORQUE, was the
> worst
> running SHO I have ever had the misfortune of driving. I took it the next
> day
> and had the stock system pieced back together and re-installed. What a
> great
> way to waste almost $700. <<
>
> Out of curiosity, how were the pipes configured (e.g. where and how many
> bends, did you utilize a crossover pipe, etc.)? As I noted earlier, a
> properly-designed true dual exhaust system will always show gains across
> the
> board, even with a vehicle like the SHO and it's transversely-mounted V6
> engine. Granted, achieving the most "optimal" design and configuration
> for a
> given setup is not always easy, and there are a couple of different ways
> to go
> about it (as proven by Ted Breaux and a couple other members of the
> community); however, given enough time and effort, an optimal system is
> attainable.
>
> Adam
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> Shotimes@autox.team.net
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