Joe,
You have a unique way of measuring performance. I still stand by what I said. The
exhaust gas will take the path of least resistance which is out the tail pipe.
KW
Joe Borg wrote:
> I merely stated that a cat back 3" exhaust does not have enough
> backpressure and causes undesirable resonance with a stock motor with
> stock manifolds and cat. Changing my muffler merely removed the added
> restriction. Retaining 2.5" maintained correct backpressure to avoid
> resonance. True, Changing to headers, hi flo cat, and MAYBE larger
> pipes would have yielded more gain.
> My results: (no power braking involved)
> Stock - floored of line - negligable tire spin
> K&N FABM - - about a 6 second smokey burnout
> Flowmaster - nothing but smoke well into second gear
> SG mod - about a 3-4 second burnout then traction
> Sounds to me like I improved horsepower then added traction.
> Comments?
> Joe Borg
>
> ______________________________ Reply Separator _________________________________
> Subject: Re: DML: Gibson exhaust installation
> Author: <dakota-truck@buffnet.net> at internet
> Date: 2/19/98 8:32 PM
>
> Joe,
>
> Flowmaster is trying to sell Flowmaster. What youwere told doesn't compute. If
> the Y
> pipe and Cat are the major restriction opening up the exhaust system after the
> cat
> would have negligible effect.
>
> I have a 94 Sport with the 5.2, 5spd, and 3.90 gears. I've had the truck since
> new
> and have had it to the track a few times. The most marked single improvement was
> the
> Gibson cat back exhaust with a set of JBA shorty headers which use the factory Y
> pipe. I picked up 2 mph at the strip and 2 mpg on the road with this
> modification.
>
> A few years ago CC did a 2.2 turbo package called the Super 60. The development
> was
> done on a dyno and with mufflers and the Dynomax Ultra made 20HP more than the
> Flowmaster.
>
> KW
>
> Joe Borg wrote:
>
> > Jeff, I recently called flowmaster. They stated with minor mods, the
> > stock exhaust system is more than adequate when a flowmaster 2 chamber
> > muffler is installed. They stated 3" pipe does not have enough
> > backpressure and although sounding "meaner" woulsd actually slow you
> > down. The concept of single in dual out mufflers is pure show and no
> > go. An exhaust system can only be as efficient as its weakest point -
> > the 2 into 1 y pipe and cat. Unless you install 2 cats with a true
> > dual setup you are gaining nothing but sound and appearance. Joe Borg
> >
> > ______________________________ Reply Separator
> _________________________________
> > Subject: DML: Gibson exhaust installation
> > Author: <dakota-truck@buffnet.net> at internet
> > Date: 2/17/98 3:09 PM
> >
> > snip
> >
> > Does flowmaster make a similar kit?
> >
> > Thanks.
> >
> >
> > jeff
> > 98 RC 4x2 V8 5spd 3.55SG flares
>
>
>
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