Exhaust noise reduction

[MUSOM]

I've had the CPE 3'' catback and downpipe for around 3 months now. The performance is incredible, however my car is a daily driver. I threw the CPE additional 14'' racing muffler on the third part of the catback system, but still have a significant "drone". Anyone have any ideas to reduce that ear rambling drone without losing power?! (ohsnap!)

[Killer]

I've had the CPE 3'' catback and downpipe for around 3 months now. The performance is incredible, however my car is a daily driver. I threw the CPE additional 14'' racing muffler on the third part of the catback system, but still have a significant "drone". Anyone have any ideas to reduce that ear rambling drone without losing power?! (ohsnap!)

Install a straight thru glasspack or resonator inline.

[Doodsmack]

i recently put a resonator in my 2.5" custom and it reduced noise quite a bit. there is still a drone at highway speeds.....if you have downpipe-back exhaust you've got to expect a lot of noise.

[StuttersC]

Install a straight thru glasspack or resonator inline.

A Cherry Bomb? That would be a neat sound on a Mazdaspeed6.

[Killer]

A Cherry Bomb? That would be a neat sound on a Mazdaspeed6.But in line before the muffs at the rear of the car it is PUUUUURRRRRRFECT!(naughty)

[Afroman]

I've had the CPE 3'' catback

just wondering, from the pictures I saw on CP-E website, is that exhaust a single outlet or dual?

[MUSOM]

single. there are good and bads with that. Physics and aerodynamic laws will prove that you get less back pressure out of a single, because it is a straighter line out, however aesthetically it makes a little bit of difference. You can harldly notice that it is now a single from a distance, but up you can tell. If it was a double, I could have put a 14'' high flow muffler on each side, and maybe made that drone a little softer, but now i'm kinda restricted to only one muffler. oh well.