[slmdgee]

I plan on getting a 3inch down pipe in to a 3inch piping that ends with a muffler in to quad tips. You think its cheaper to just get the catback or do this custom?

Let me know cause ill have the 335xi sedan (n54) By march. So i would like to think about everything.

[nafoo]

Best bet would be to contact a local muffler shop and ask how much it would cost. I'm sure you will have to choose between the quality of the piping, type of muffler, tips, etc.

[slmdgee]

Yeah i got a meinke around here but i was thinking of doing this with my friend. He has a welder so we could just buy the stainless steel piping and do this.


But the exhuast i really like is turner motor-sports, and the Ams. I dont really want to leave my car at a muffler shop, but i think a 3 in stainless steel piping in to a muffler and just weld in 4 tips. I want this to be perfect, this could either be cheap or expensive.

[39nas-t]

That is what I did, custom exhaust 3 inch downpipes and 3 inch single with 1 borla and 3.5 inch tips....

[slmdgee]

Wow that looks hella clean! How much did that run you and do you have any sounds clips?

[39nas-t]

I paid 1650 for everything including downpipes...
now i cut the cats because it is 3" goin into the cats then welded 3inch back so that is my downpipe setup but it works and sounds great!
send me your phone number I have sound clips on my phone and i will text message you the track runs

[39nas-t]

Hoping the videos upload

[slmdgee]

So basically you bought the 3inch down pipe then welded on a straight pipe all the way to the borla mufflers.? I was going to get a 3inch downpipe and a borla catback, but thats 3inch to 2.5 inch. I want to hear your set up.

[cbturbo335i]

I have a 07 e92 335i 6 speed manual. I had meineke cut off my mufflers, center resonators and cats and weld 3" piping in there place, it sounds soooo good. There is no performance difference between straight pipes and aftermarket mufflers and aftermarket catless downpipes, they are both straight through. The straight pipes sound soooo much better and you save thousands of dollars!!!!! Meineke charged me $400 for everything. The exhaust is really loud but its not like the annoying high pitch hondas. It has a really low grumble like a mustang or camaro. They welded the O2 sensors from the old cats on to the straight pipes so the car would not throw a code and can pass inspection.

[Syndicategt]

Just FYI,

Several people have done a custom single 3 inch exhaust and reverted back to stock/aftermarket. It's extremely lound and has horendous drone, listen to YouTube clips of the HPF's single 3".

[slmdgee]

Originally Posted by cbturbo335i

I have a 07 e92 335i 6 speed manual. I had meineke cut off my mufflers, center resonators and cats and weld 3" piping in there place, it sounds soooo good. There is no performance difference between straight pipes and aftermarket mufflers and aftermarket catless downpipes, they are both straight through. The straight pipes sound soooo much better and you save thousands of dollars!!!!! Meineke charged me $400 for everything. The exhaust is really loud but its not like the annoying high pitch hondas. It has a really low grumble like a mustang or camaro. They welded the O2 sensors from the old cats on to the straight pipes so the car would not throw a code and can pass inspection.

Can you post of video of this on here?

[bigdaddycane]

39nas-t,

why didn't you just go with an aftermarket down pipe?

[slmdgee]

Thats what i would have done the 3inch down pipe, then with a custom exhuast. But i think i am gunna get the 3inch downpipe and borla cat back with dual tips.

[zeenon53]

I was thinking of getting the MS 3" downpipes and cutting off the flange where it goes to 2.5" and re-welding on a 3" flange. Then making a custom 3" exhaust. I'm surprised there isn't a TRUE 3" turbo back exhaust on the market for our cars. Maybe COBB can make it happen?