I would say that the headers would make the MOST marked improvement,
followed by the muffler. As far as "fake duals" go, I agree.....There
cant be much gain just by adding an extra exhaust pipe after the exhaust has
had to flow through ONE pipe, muffler and cat almost its whole trip.
>From what I understand, the exhaust pulse is most effected by the first
several feet of exhaust. This is why headers make such a difference...how
well they scavange gases from the cylinder.
I talked to a Dak hot-rodder (turned his 94 into a strip truck) and he said
the only way to get dual performance is to get true duals. WHich, on the
Dak, requires re-locating the gas tank to the bed.
At 08:32 PM 2/19/98 -0500, you wrote:
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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