[Shotimes] true dual exhaust

[Donald Mallinson]

SEveral people have explored the true dual exhaust system, 
and most people have concluded it isn't worth the extra cost 
and weight.

If you take out too much back pressure, the SHO V6 engine 
tends to lose low end torque, and to most street driven 
SHO's that is more important than high end hp.

The ATX has a pretty good flowing Y-pipe/cat combination, 
and even high flow cats aren't a big advantage unless your 
current cat converters are plugged up.  A decent 2-1-2 or 
even 2-1-1 system from the cats on back with a resonator 
(your idea of a glass pack in the middle is a good one, the 
SHO needs some extra high frequency sound deadener to keep 
it from being so raspy) and turbo muffler will keep noise to 
a modest roar and give a few extra HP, maybe 5-10.  A 
straight through muffler is going to be louder and raspier, 
but some people like that sound.

No need to go wild with pipe size either.  A 2.5 or 2.75" 
system cat back is plenty for mostly stock cars.

Don Mallinson

troy gulbrandson wrote:

> Well im thinking of things to do to my car this spring. one thing that i 
> would really like to do is make a true dual exhaust system for my 93 
> ATX. any one every done it on an ATX. i know i would get some hight flow 
> cats. i even thought about after the cats puting glass packs then the 
> mufflers. i tought i would ask you guys what you thought of it or if it 
> is even worth it. IF any one has ever heard one let me know what you 
> thought of the sound. i dont know which mufflers i would use. im just in 
> the thought process for now. this would be my spring project. thanks for 
> helping
> troy gulbrandson
> 93 atx
> green/tan
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