thermal exhaust sound

[coupe_nasty]

So i just installed a thermal catback system on my gsx. Has a nice tone but not like if heard on other peoples. Most ones i hear have a deep growl almost like a subaru. Mine just has a deep hum or tone. Im a little confused as to why i dont hear the same sound from mine. It also has a 3inch downpipe.

 

[Alan11]

I love mine and it is not that loud either, only when I really push it..I have the stock downpipe, with a test pipe, no cat.
Thermal is not loud at all, imo.

One quick question how did you hooked up you 3" dp? Did you cut and weld the 2.5" thermal flange?

 

[supermario300hp]

My exhaust isn't loud either I have a thermal as well, and i don't know why I doesn't sound like my buddies dsm, we both have the same setup. Minus the cat, he doesn't have one and I have a hi flow cat. Would it make that much of a difference?

 

[Blurred Talon]

I've never heard a DSM sound like a Subaru, they are TOTALLY different engines.

Camshafts will change they way your exhaust sounds.

My exhaust isn't loud either I have a thermal as well, and i don't know why I doesn't sound like my buddies dsm, we both have the same setup. Minus the cat, he doesn't have one and I have a hi flow cat. Would it make that much of a difference?

Yes, a cat will change the sound.
Same as having a resonator vs not having one or even having a bigger (longer) resonator.

 

[estoyaqui30]

I run the thermal too. I'm running a modified 3" mandrel bend Buschur racing down pipe. I'm running a Forced Performance 3" O2 housing with a V band clamp to the turbo outlet. The system sounds nice, not too loud, but still very noticeable.

 

[coupe_nasty]

well i went from having a 2.5" catback with two resonators in it, to the 3inch thermal and its hardly louder at all.

 

[D00kie]

I'm also running the thermal with a rre downpipe with cat delete. I love the growl it has.

 

[mantega4g63]

I've never heard a DSM sound like a Subaru, they are TOTALLY different engines.

Camshafts will change they way your exhaust sounds.



Yes, a cat will change the sound.
Same as having a resonator vs not having one or even having a bigger (longer) resonator.

The engine is NOT what makes subaru sound the way it does, porches have boxer engines as well and clearly sound different

 

[gsxtreme1987]

Here is mine.

Apexi DP 3" Thermal catback.

GSX 2 Step, thermal exhaust - YouTube