Restricter in Exhaust?

[FredK]

I used a Aero Turbine AR25 resonator--10" can, 14" overall length. No more rasp (I had a stock 318is resonator and $20 muffler), but now it drones a bit on the highway. Still, I like the tone and volume (deep, quiet).

I might try a larger center muffler eventually to quiet things down further, but then again, it took me 9 months to break down and install a new exhaust.

I used a 14577 offset/offset 2.5" I/O to fit my 318is rear valance, but a 325i rear valance would be served perfectly by a 14586. Get some dual tips and call it a day.

[evil_twin]

Because I really want to go with a different style muffler now. But I really need something that will actually quiet it down along with my cherrybomb resonator.

[nando]

it's a tipped muffler, so no, but they do sell plain ones.

[evil_twin]

... so is the vibrant motorsports muffler a good resonator?

[nando]

oh right I was thinking of the 14815. it's got great looking tips but yeah, not a good sounding muffler at all. I really want the vibrant motorsports 3" in/dual out muffler, with a magnaflow high-flow cat and a borla XRS as the center muffler.

[FredK]

Um, I meant 14586, which is 2.5" offset in center out. :oops: The 14589 is 3" I/O.

The one that people always get on TEH FORUMZZZ and complain about volume is the 14815. The 14815 is only available with a 2.25" single in, and dual out, with a small-ish can, which leads to a rather raucous exhaust tone.

[shiboujin]

we can do like me and have a cutout. Maybe an electronic cutout?

You got a new job yet? hopefully its one where you can hook a brother up with safety inspection :)

[evil_twin]

See. it was hard looking for a 2.5" inlet muffler that I liked. Yoshi, most of the materirals are right there already. I Just need the muffler.

[nando]

the 14589 only has a 2.25" inlet though :(

[FredK]

why do you want a restrictor? 2.5" is fine for an N/A motor. Just put a second muffler in the center somewhere.

I think he's using a 29" Cherry Bomb as a resonator / center muffler, and another muffler out back ($20 special).

I think one of the ways to quiet it down is to get a bigger can out back, like a Flowmaster SUV series or a Magnaflow 5x11x22 muffler such as the 14589.

[shiboujin]

Buy the materials and I'll make you a 3" for cheap.

[evil_twin]

o rly? Yah, then nevermind, disregard this thread... time to find a new muffler.

[nando]

I ran stock m20 exhaust for a while, and it ran fine... I don't have much room to install another muffler because my cherrybomb glasspack is taking up a lot of piping.

a single 2.5" is only slightly larger than the stock 325i exhaust.

[evil_twin]

Ugh, maybe it's time to get a new resonated muffler.

[shiboujin]

http://cgi.ebay.com/ebaymotors/RS-TYPE-N1-3-5-TIP-SILENCER-UNIVERSAL-EXHAUST-MUFFLER_W0QQcmdZViewItemQQ_trkparmsZ65Q3a12Q7c66Q3a2Q7c39Q3a1Q7c72Q3a1171Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem3ef63e2e00QQitemZ270419242496QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

http://cgi.ebay.com/ebaymotors/4-TIP-MUFFLER-EXHAUST-REMOVEABLE-UNIVERSAL-SILENCER_W0QQcmdZViewItemQQ_trkparmsZ65Q3a12Q7c66Q3a2Q7c39Q3a1Q7c72Q3a1171Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem5632865ebdQQitemZ370214854333QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

What size is your exhaust outlet? What you want looks like this: