Exhaust Help

[re34perGTT]

Hi, I'm looking to purchase an exhaust for my gtt. I've come across the hks high power and silent along with the blitz nur spec r. Does anyone know what exhaust is better sound wise and performance wise? Also do I need any sort of permit for this mod ?

And if I open my boost controller so it'll be at 0 bar and have a control valve after the cat will my exhaust be under 90db?

Will greatly appreciate any help

[GTSBoy]

Step 1) Find good local exhaust shop.

Step 2) Engage good local exhaust shop to build you a 3 - 3.5" exhaust with large rear and mid mufflers and large 100 - 200 cell 5" Venom cat or similar.

Step 3) Drive away with knowledge that Steps 1 & 2 have just cost you less than buying Jap exhaust whilst flowing more and probably being just as quiet if not a little quieter.

I do not understand your question about "opening boost controller so it'll be at 0 bar", nor do I understand why you would want a control valve after the cat. Neither of these things make sense, although the latter might be interpreted to be a reference to a dumb arse method of shutting up an exhaust that is too loud.

[KiwiRS4T]

Don't just buy a "cat back" system. As above get someone to make you one including the front pipe. A competent shop will make you one that is legal and still sounds good.

[re34perGTT]

Just bought a second hand hks one from Japan for $405 including shipping + tax etc. the shops here wanted $1500+ for an exhaust

[butterfly effect]

Try AES mufflers for high flow , no stepdowns, deep ,quieter sound.

[Ben C34]

Try AES mufflers for high flow , no stepdowns, deep ,quieter sound.

Aren't you affiliated with them? If so you should really point it out when recommending something.

[XGTRX]

3.5 inch straight through system with a massive cannon. Nothing less. Apexi exhaust control valve and tail silencer. Let the bitch flow.

[AngryRB]

My system is simply a 3 1/2inch jap system cat back, cost $200 from wrecker then I replaced muffler with a 3inch Xforce and a

100cell cat, so probably all up $700, seemed to flow well enough, stainless too so cheaper than getting it all made up,

ive had the nur spec 4inch muffler which is basically a massive loud cannon piece of crap, and the jap muffler

HKS etc is basically a

restricted crappy cannon that looks fully sick and sounds hektic, so that counts for something lol...

Edited July 12, 2014 by AngryRB

[XGTRX]

The beauty with a valve in your system when you want it loud you can. $160 and have cheap straight through system.

[Manuel Kasko]

Aren't you affiliated with them? If so you should really point it out when recommending something.

He sure is, should also be paying to advertise his products all the time.

I'm all for his products but there are people who are following the rules and paying to advertise products on here

[zoomzoom]

Which ones did you buy in the end? I have been interested in a HKS hi power silent. Its only a few hundred more than a mild steel custom exhaust.

However, judging from hundreds of opinions, the HKS "silent" exhaust ranges from "can't hear it" to "sets off car alarms at idle". For that reason I haven't been willing to risk the coin on it.

[re34perGTT]

I bought the hks hi power silent second hand from japan. I've also seen thst myself when looking up info about it. When it gets shipped to Perth and installed which won't be for another 8 weeks minimum I'll hook it up to my car and test it properly and upload a video and post the results. Only ones you see on YouTube they barley get the car over 4000 rpm so you can't tell if it's good or not