[Ron1n]

I've been talking to someone about possibly doing some custom exhaust work for our cars.

My questions to you guys are:

1. Would you even be interested?
2. What would you want out of a custom exhaust?
3. Would removing the DPF and Cats be a requirement, or something you could live without?
4. What is the most important thing you'd like to see out of a custom exhaust?
5. What would you be willing to pay for one?

Posts in this thread will give us a better idea as to whether or not it's worth it (and by us, I mean him/them).

[EYE4SPEED]

Gotta have tips that fill out the rear valance and a deep growl. Should have two options - one for those living in states with emissions an another option for those that don't.

[neovb]

1. Yes!
2. Larger piping (not sure how this would work before the exhaust splits for the two mufflers, as that piping is not round). Larger piping (I believe its 2.5" per pipe stock) from the split to the mufflers (3" per pipe should be good). The passenger side muffler pipe has quite a few restrictions, evening them out would be great. Free flowing mufflers with a 3" inlet that aren't excessively loud. Muffler tips that do not require any modification to the rear bumper.
3. I would prefer the DPF stay, as from what I understand, if its removed the car will belch black smoke like a truck. There has also been some talk that the car may lose power with the DPF removed, although I dont know if thats true. Personally, I couldnt care about the catalytic converters, since diesel cars do not undergo emissions inspection in the state where my car is registered/inspected. However if they were removed, some method would be needed to ensure no SES/CEL lights. Also, a full exhaust system would have to ensure that there are no problems with the urea injection system.
4. Price/performance ratio. I wouldnt be interested in paying $1250+ dollars for an exhaust if it results in a gain of 5-10WHP. I'd rather spend $250 on a couple of mufflers (for the sound) and have an exhaust shop weld them in. Now if it results in 30-40WHP and faster turbo spool, then I'm all in.
5. The cheaper the better!

[itsbrokeagain]

The biggest constraints is getting around the DPF. That really is the biggest bottleneck and the car needs to be tuned accordingly without it. If there was a way to flash it to make the Urea system inactive that would be great.

[Ron1n]

Originally Posted by Matt@Camber-Toe

The biggest constraints is getting around the DPF. That really is the biggest bottleneck and the car needs to be tuned accordingly without it. If there was a way to flash it to make the Urea system inactive that would be great.

Matt, I've talked to at least 1 tuner that says it's possible...but I haven't had time to work with him to figure it out for sure. I need to make a trip north to make it happen.

[RaceFab]

I will be doing an exhaust system in the next few weeks on a 335d..i will let you know my results.

[Julesandtrish]

Excellent news RaceFab. I can't wait to hear about your results. Good luck!

[Ron1n]

http://www.youtube.com/watch?NR=1&v=j-SzHGHCDeI

Yes, please.

[cssnms]

Well it's set,,,, the car is being dropped off this Sunday to have a custom cat back exhaust installed. I hope to have it back by Wednesday. If this is sucessful the fabricator is shooting to make this system available to anyone that is interested and he intends to design it in such a way that it can be shipped and installed with very little in the way of modifications.

[neovb]

Awesome, I'm excited. When you get it back, I'd love to hear what it sounds like - I may just take my car up to them too.

[cssnms]

Originally Posted by neovb

Awesome, I'm excited. When you get it back, I'd love to hear what it sounds like - I may just take my car up to them too.

Dropping the sled off tomorrow. Of course you can see how it sounds in person! Hope to have a video up later in the week.

[Express]

if i had a 335d which i wish i had, i would want the black smoke mod for sure- along with the loud spooling.

..i guess the powerstoke owner in me had to come out for a second!

[DieselDiner]

Originally Posted by cssnms

Dropping the sled off tomorrow. Of course you can see how it sounds in person! Hope to have a video up later in the week.

Chris, have you started bugging the shop yet?

[cssnms]

Lol not yet! I am traveling until tomorrow, so I will wait until tomorrow morning to start harassing him. It might actually be ready tomorrow by the time my flight gets in at 5.

[Julesandtrish]

Drool.........I can't wait to hear your results. Don't keep us hanging too long.

[335dM]

Any update???

[Julesandtrish]

Originally Posted by cssnms

Lol not yet! I am traveling until tomorrow, so I will wait until tomorrow morning to start harassing him. It might actually be ready tomorrow by the time my flight gets in at 5.

Did you get your car back yet? Inquiring minds want to know.