A year or so ago I bought a J's racing exhaust and had to change that pretty quickly (as i value my hearing) and bought a spoon exhaust which was significantly quiter and had less "boominess' in certain areas of the rpm range.

Today i sold my spoon exhaust and put the stock one back on and wow... I can finally appreciate how much sound tuning went into making it sound just right. I'm not sure ill ever have another aftermarket exhaust... unless the HKS sounds like stock only louder. It seems they are the only ones who have used a type of chamber to increase the total volume of the exhaust elimimnating some of the resonances other exhausts do at varying rpms (i guess to to their smaller volumes)..
Maybe spugen can work on something here by making a place where a extra volume adding chamber can be bolted on to reduce resonance.

 

I had the HKS and went back to stock. I don't miss it at all.

 

The HKS is about the quietest exhaust I've heard personally.

 

Yeah, stock wasn't too bad. But it was way heavy.

 

Anybody have a Mugen Exhaust? I'd love to hear it!

 

[QUOTE]Originally posted by Iceman
[B]Anybody have a Mugen Exhaust?

 

I wonder if someone could duplicate the stock sound with just less weight?

 

Than answer for the right balance of less weight and a nice tone without being booming is Mugen!]

 

I'm not surprised at all... you get what you pay for!

 

another owner went back to stock and say wow here

i think the mugen is the closest thing to stock with no lose in power

and i think the HKS is quite a bit louder than stock

i came to a conclusion, if you want hp gain, it will be loud.