Wednesday, January 30, 2008 - 10:38 pm, by: Tom Nicol(Goosemonger)
About a year ago I got a 2.5" exhaust system put on with hi-flow 3" cat. Works beautifully, sounds great at high revs, but anything below 3000 is just a loud drone. So naturally I'm starting to get over it, I have to drive for a couple of days straight soon and 110km/h on the highway sitting at about 2.6k revs will have my ears bleeding from the drone.
Does anyone have any suggestions for a muffler setup to achieve a medium sounding exhaust? I'd like it to have a low rumble, but nothing offending, and hopefully it will still sound decent when I sink my foot down.
Specs one more time - TT, catback 2.5" system with 3" hi-flow cat, two hotdog mufflers and I think one regular muffler half way down (although maybe not seeing how it's so loud). It's directly replaced the stock system, so it splits from the middle into a Y shape.
Having had a custom exhaust and a Japanese muffler system I'm an advocate for the Japanese stuff. With the factory exhaust and custom job it used to scrape all over the place but this exhaust I have at the moment is great - no drone, very quiet but still has a nice roar when you give it a boot full.
Thursday, January 31, 2008 - 02:35 pm, by: Luke Burt(Burt)
Not so much the pipe diameter, more the mufflers you've got on it. If you replace the two hot dog mufflers with some proper straight through ones, It would probably tone the noise down a fair amount. Ive got a 3.5inch to twin 3 inch system on mine, it has one 3.5 inch straight through, and then one 3 inch straight through on both sides at the back.. its not too bad on the highway, bit of drone..but ah i love it, it f***in screams, good deep loud note.
But yes, hotdog mufflers are basically useless for sound control.
Thursday, January 31, 2008 - 03:14 pm, by: Callum Finch(Sigeneat)
Mine is all Jap branded so i cant give you any names, however i have 2x off centre mufflers (ie, the pipe going in is offset from the pipe leaving) on each side after the exhausts split from the cat.
In the 0 - 2000rpm range it can be a little loud and quite annoying however any higher and its sweet.
Thursday, January 31, 2008 - 04:40 pm, by: Kyle Wathen(Cspot)
I currently have 3” Front Pipe -> 3” Mid pipe & Cat -> Split into 2.5” -> 3” mufflers -> Cannons
Its still a bit loud so I’ll replace the cannons with 2.5” mufflers and see how that goes. If its STILL too loud I’m going to add a mid muffler/resonator just after the cat.
I also want to make it quiet at low RPM’s (driving suburban etc) but give a nice note when its coming onto full boost.