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      04-03-2014, 06:58 PM   #1
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FS: 325/28/30 to 335 dual exhaust pipe conversion

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      04-04-2014, 11:43 AM   #2
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No interests? Awww sad face
Im interested! 😮 it looks great sounds alright id like to do this but have mine sound more aggressive
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      04-04-2014, 11:50 AM   #3
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Im interested! 😮 it looks great sounds alright id like to do this but have mine sound more aggressive
Cool, the only reason I haven't taken it off yet is I am still waiting on my diffuser by next week, waiting on a vendor to ship my tips. What I can possibly do is have the shop tac weld a small bar between the exhaust pipe tips to keep them aligned while the muffler is cut off. I am debating if I will include the y-pipe or not. But to make it more aggressive, you're in FL I don't think you have emissions testing do you? Remove your 2ndary cats and resonator with straight pipe. That way you have more exhaust burple and bass. There is some already on my current set up but the 2ndary cats are in the way to give it it's full sound.
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      04-04-2014, 12:03 PM   #4
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There might be a place for emission testing id have to look it up. But i would also have to change the rear bumper? To the oem 335?
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      04-04-2014, 12:12 PM   #5
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There might be a place for emission testing id have to look it up. But i would also have to change the rear bumper? To the oem 335?
Yes, a 328 muffler exit is to far out left. What color car do you have?
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      04-04-2014, 12:13 PM   #6
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There might be a place for emission testing id have to look it up. But i would also have to change the rear bumper? To the oem 335?
Yes, a 328 muffler exit is to far out left. What color car do you have?
Blue
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      04-04-2014, 12:19 PM   #7
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      04-04-2014, 12:25 PM   #8
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Very Nice set up, If u can post the link of your diffuser and and DIY with all the part you need would be awesome.
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      04-04-2014, 12:53 PM   #9
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Very Nice set up, If u can post the link of your diffuser and and DIY with all the part you need would be awesome.
The diffuser is from jgmods and it fits oem and replica bumpers. The diffuser came with the bumper. I don't know any DIY links, just go to an exhaust shop and they'll do it.
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      04-04-2014, 08:31 PM   #10
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bump
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      04-06-2014, 09:59 PM   #11
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why are you copying me? lol
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      04-06-2014, 10:22 PM   #12
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why are you copying me? lol
Opportunity presented itself for $50 dd diffuser.
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      04-07-2014, 02:34 AM   #13
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      04-07-2014, 02:37 AM   #14
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      04-09-2014, 04:06 PM   #15
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conolulu has local dibs for the whole dual conversion for now
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      04-15-2014, 03:03 PM   #16
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I just ordered AFE race pipe for my 07 328xi would I be able to do this type of setup too?
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      04-15-2014, 03:07 PM   #17
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I just ordered AFE race pipe for my 07 328xi would I be able to do this type of setup too?
absolutely but a local has dibs, you'd just have to find a local exhaust shop, it hasn't hard to do.
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      04-15-2014, 03:22 PM   #18
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So I am assuming all I need is the diffuser from that site that was noted, 2 mufflers and then stainless steel piping which the shop could install?
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      04-15-2014, 03:33 PM   #19
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So I am assuming all I need is the diffuser from that site that was noted, 2 mufflers and then stainless steel piping which the shop could install?
Exactly
But in my experiences, cheap mufflers reduces rasp, I have used this muffler magnaflow muffler http://www.amazon.com/gp/aw/d/B000CC...ls_o00_s00_i00 with 2 different midpipes and it does reduce rasp. You only need to buy 1 muffler with 2 outlets, 1 inlet, the exhaust shop will know what to do with the rest, and buy exhaust tips of your preference. I would do a straight pipe exhaust first then you can play with the muffler. Go loud first, then tone it down later.
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      04-15-2014, 04:03 PM   #20
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Quote:
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Exactly
But in my experiences, cheap mufflers reduces rasp, I have used this muffler magnaflow muffler http://www.amazon.com/gp/aw/d/B000CC...ls_o00_s00_i00 with 2 different midpipes and it does reduce rasp. You only need to buy 1 muffler with 2 outlets, 1 inlet, the exhaust shop will know what to do with the rest, and buy exhaust tips of your preference. I would do a straight pipe exhaust first then you can play with the muffler. Go loud first, then tone it down later.
Thanks for the advice. Now when you say mid pipes my AFE race pipes would cover that area right? So only thing left would be that magnaflow muffler and 4 exhaust tips? Also is there a certain diffuser that would take the dual on both sides I only see one that are set up with a single tip on each side?
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      04-15-2014, 04:06 PM   #21
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Quote:
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Thanks for the advice. Now when you say mid pipes my AFE race pipes would cover that area right? So only thing left would be that magnaflow muffler and 4 exhaust tips? Also is there a certain diffuser that would take the dual on both sides I only see one that are set up with a single tip on each side?
That is correct.
Certain diffuser, ask jgmods for lci mtech diffuser for 335i (sedan or coupe, they're both different)
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      04-15-2014, 04:20 PM   #22
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I have a sedan. Either or will fit my bumper? Or does it come with the bumper as well.
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