oh gee, with all this math/physics being said...

can someone just rank from best to worst all the aftermarket exhaust sytems (in terms of power gain)?

 

This is my PERSONAL OPINION which many may argue with but:

There are not any significant gains on ANY of the after market exhausts. If 1-3hp for $650-2800 is a big deal to you, then go for it.

If you want gains look elsewhere. If you want to modify your exhaust sound, then mess with the exhaust.

 

I actually read about this somewhere before and there was an equation. too bad i didn't grab it when i saw it.

anyway, if my memory serves right, it goes something like the longer the intake pipe/tube is, the better it is for the low end tq ...

make sense?


[QUOTE]Originally posted by jerrypeterson
[B]

This is my PERSONAL OPINION which many may argue with but:

There are not any significant gains on ANY of the after market exhausts.

 

ok

so how about the noise level with reference to pipe size/length and muffler?

i guess the muffler plays the biggest role in backpressure ... ?

 

[QUOTE]Originally posted by stockae92
[B]

 

[QUOTE]Originally posted by jerrypeterson
Pipe size/length affect on the sound, I don't know.

 

I read with with interest all the comments on exhausts and will add my 2 bits. I think the standard exhaust is a good if you want a nice standard car, however it is a rather convoluted mass of pipes and restricts the car. I had a straight thru exhaust made with the aid of a dyno and my power went from 113Kw at the rear wheels to 127 Kw at the rear wheels. All for $800AU($450US). I'd say that is damn good "bang for the bucks". I didn't use any special materials just standard s/steel and a half inch over sized diameter(and this was for asthetics) The noise level is higher but hey it sounds great.

 

Hey Chris,

You must remember that the tuner who dynoed your car is less than reputable and he compared it against the dyno figures for another stock not your s2k's baseline.

Dyno figures will vary significantly from car to car, dyno to dyno and in varying atmospheric conditions.

 

Nah, mine wasn't dynoed at the individual who shall remain nameless, mine was done at the motec distributer. And I acknowledge all the variables