Okay I have had 2 different turbo backs so far with no cat and they have all been very loud. Also I got pulled over last week because of it being so loud. So is there any turbo backs that you can run without a cat that are not loud?

 

I heard the Buschur 3" turboback exhaust with the Magnaflow muffler is quiet.

 

I can't provide a sound clip but the GReddy EVO2 is on the quiet side.

 

HKS HiPower
It's got a lonnnnng resonator and is ceramic coated.

 

does it make good power as well?

 

Don't know about larger turbo. But on stocker made over 400 HP/400 ftLb TQ to the wheels :}
The only problem is I had to cut the neck where it mates to the stock Cat. It was down to 2.5" at the flange. So I welded a section of 3" pipe and a new 3" flange to mate to the 3" test-pipe.
Sounds wonderful.

 

Got HKS Silent Hi-Power on mine along with O2 housing, HKS Downpipe and Decat pipe. I wanted to get an exhaust I could live with and am happy with the results. It sounds awsome and definitely loud enough for me.

Coasting around, it is slightly louder than stock but when you step on it, the car rips - the sound is very nice (almost like a stock sports car). I have also heard Hipower (with HKS manifold, O2 and decat). It was livable but I definitely wanted something quiter.

My tuner said that the Silent is good for 400 HP ATF which is fine with me...

 

SuperSprint. Do a search

 

Change out your cat delete pipe for the Megan resonator type. It is cheap and really quiets things down.

I have the Megan DP and Cat Del, and the 5Zigen fireball cat back. The only time it is loud is when I am on it hard. Even then it is still rather tolerable. Other than that it is no louder than any mustang I have ever heard, and thost things get pretty loud.

Paul

 

Injen makes the quietest exhaust i've ever heard...Even quieter than my buschur...It sounds just like stock at idle, but does wake up when you lay into it...

 

Greddy Evo II, there is no substitute, it is indeed the lowest or one of the lowest in sound. It has a silencer which is something that now days most of the performance exhaust makers are lacking.

You can't go wrong with it, very quiet.

Carlos

 

Yes they are! Probably one of the best flowing quiet exhausts out.. I believe the "new" style muffler is the same way but I'm not sure.

If you use a silencer you will probably have some if not a significant performance loss :\

 

Ya, our stealth turbo back is quiet and also doesn't get the attention of the cops. It has been a big seller since we released it last year.

 

greddy evo2 ftw

 

I love my greddy evo2 its not loud at all even when ran catless with a dp.