What's your custom exhaust?

[balkanbemve]

Just got a 135i and starting to look for an exhaust. Not a lot of great options. The dinan muffler sounds really good, but $1400 for just a muffler? The PE sounds great but good luck finding one.

So, my question is have any of you guys built custom catbacks that sound great and are not just a muffler delete. For example, HF or catless DP, with a vibrant UQ resonator in place of the muffler leaving the middle resonator in place, etc etc. Mine is an N55 so I would love to hear from the N55 guys what you have done, if you have any actual clips of it, drone, loudness level etc.

The valvetronic universal muffler looks interesting too. Dunno if anyone has tried that.

[BOOSTIN25LBS]

I had a 2012 N55 135i and did the 5 inch cp-e downpipe. cut it off in the middle and ran a full 4 inch exhaust all the way back. sounded like a supra. no videos because it was about 10 years ago but it was awesome i can tell you that

[ShocknAwe]

Had one built, twin 3" from turbos to 3.5" collector, midpipe including in line cat then resonator, muffler and dual exit to quad tips at 1M spacing. Has a drone pipe placed to eliminate the gnarly drone that shows up if you try to run large diameter pipes on these cars.

Sounds fairly exotic with my Hydra twins and N53 high flow head.

[JPuehl]

I have full 3.5" stainless exhaust from Black Market Racing and it sounds awesome, a little drone about ~3k rpm but otherwise it's nice and deep. Below is a link to the exhaust. I was told by BMR, after the fact of course, that you can get this with a single tip which I would have preferred to save a few pounds of weight, there's no point in having 2 3.5" tips on an exhaust that is 3.5" itself. I have a PS2, VRSF c4t13ss DP and this exhaust and have NO fitment issues with anything. It is made to order so be prepared for a custom look and to wait for it to be made.

https://blackmarketracing.net/produc...r-135i-n54-n55