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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > 328 to 335 exhaust conversion.



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      03-26-2010, 02:22 AM   #1
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328 to 335 exhaust conversion.

How many ways are there to convert the 328 exhaust into 335 look?
whats the cheapest way? Magnaflow Muffler?
Thanks
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      03-26-2010, 10:51 PM   #2
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any opinion?
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      03-26-2010, 11:59 PM   #3
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Quote:
Originally Posted by Cc328i View Post
any opinion?
my friend
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      03-27-2010, 07:55 PM   #4
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the cheapest way is to do magnaflow muffler with aluminum piping. but if you look under your car after a month or 2, its gonna look like crap with rusting everywhere and you going to lose more performance. or you can use crush bends and mild steel to the pipings for a bit more quality. there's really only 1 way to do the conversion and is just have one muffler down the middle and then split. usually most muffler shops know how to do it. or I can refer you to a guy down in Irvine (Daniel who used to work for RissRacing but now he has his own company called Race Spirit Inspire). He really know what he's talking about.
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      03-27-2010, 11:06 PM   #5
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I'm actually doing a 328 to 335 conversion monday. I decided to cut off right behind my magnaflow muffler that I have right now and run straight pipes around the box in the trunk. If you like quiet, do the Magnaflow. I absolutly hate it because its just like stock and I want some sound thats why i'm going to run straight pipes. I ordered some tips off Magnaflows website part # 35124. I'll post pics when it gets done on monday!!
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      03-27-2010, 11:16 PM   #6
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dont forget to get a 335 bumper lol
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      03-27-2010, 11:27 PM   #7
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I want it as quiet as possible! Anyway we can re-use the stock 328 single side muffler and re-route it for 335 duals? I think magnaflow is even too loud!
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      03-28-2010, 10:27 AM   #8
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haha if you want quiet then just keep the stock muffler and then run two pipes out of that.

And yes 335i82108 I did buy a 335i bumper lol
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      03-30-2010, 12:48 AM   #9
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Quote:
Originally Posted by jcab1212 View Post
I'm actually doing a 328 to 335 conversion monday. I decided to cut off right behind my magnaflow muffler that I have right now and run straight pipes around the box in the trunk. If you like quiet, do the Magnaflow. I absolutly hate it because its just like stock and I want some sound thats why i'm going to run straight pipes. I ordered some tips off Magnaflows website part # 35124. I'll post pics when it gets done on monday!!
GREAT!! PIX plz!
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      03-30-2010, 01:11 AM   #10
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Quote:
Originally Posted by cbbplanet View Post
the cheapest way is to do magnaflow muffler with aluminum piping. but if you look under your car after a month or 2, its gonna look like crap with rusting everywhere and you going to lose more performance. or you can use crush bends and mild steel to the pipings for a bit more quality. there's really only 1 way to do the conversion and is just have one muffler down the middle and then split. usually most muffler shops know how to do it. or I can refer you to a guy down in Irvine (Daniel who used to work for RissRacing but now he has his own company called Race Spirit Inspire). He really know what he's talking about.
whats his number? xiexie
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      03-30-2010, 10:05 PM   #11
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is it neccesary to buy a 335i rear bumber to run quads or will a 335 diffuser fit on a 330i rear bumper???
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      03-30-2010, 10:19 PM   #12
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*We're talking about a 335i mtec diffuser on a 330i mtec rear bumber.....
just to be clear...
would that fit? or must I buy a new 335i mtec rear bumper and retrofit it for my 330i???
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      03-30-2010, 10:48 PM   #13
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Quote:
Originally Posted by jcab1212 View Post
haha if you want quiet then just keep the stock muffler and then run two pipes out of that.

And yes 335i82108 I did buy a 335i bumper lol

Thats what i'm planning to do! Think it'll work?
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      03-30-2010, 10:56 PM   #14
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Quote:
Originally Posted by JoeShaney View Post
is it neccesary to buy a 335i rear bumber to run quads or will a 335 diffuser fit on a 330i rear bumper???
Quote:
Originally Posted by JoeShaney View Post
*We're talking about a 335i mtec diffuser on a 330i mtec rear bumber.....
just to be clear...
would that fit? or must I buy a new 335i mtec rear bumper and retrofit it for my 330i???
The 335 diffuser will fit on the 330i M-tech bumper, depending on the exhaust setup you plan to do, some of the undercarraige panels will have to be removed/cut.
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      03-30-2010, 11:59 PM   #15
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or take it to a body shop and get them to slice and dice your stock bumper. if you take it to a good place, you cant even tell that they have made a cut. thats what im planning on doing...i think
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      03-31-2010, 01:25 AM   #16
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btw are you doing mendrel bending or crush bending? mendrel is too expensive for me =/ i might just do crush with mild steel pipings.
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      03-31-2010, 01:57 AM   #17
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Does anyone have an idea of how much would it be to get this done? excluding the diffuser.
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      04-06-2010, 12:27 AM   #18
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tttt
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      04-07-2010, 04:43 PM   #19
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This guys did it with a magnaflow muffler for $400 on a 325

http://www.e90post.com/forums/showthread.php?t=371289
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      04-08-2010, 12:39 AM   #20
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Quote:
Originally Posted by zamba0321 View Post
This guys did it with a magnaflow muffler for $400 on a 325

http://www.e90post.com/forums/showthread.php?t=371289
Thanks man. Its really nice!! U think u are gonna do it too?
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      04-08-2010, 01:54 AM   #21
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about the potential rusting with aluminized steel... if you powdercoat the exhaust then that should help. plus, if you're in CA, it's much less of a problem then if you lived in a place with tons of road salt/snow/violent weather.
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      04-08-2010, 09:30 PM   #22
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Well it sure does look nice ..
Here's one with quads on an E93 I suppose would also work

http://www.e90post.com/forums/showthread.php?t=369869

Quote:
Originally Posted by Cc328i View Post
Thanks man. Its really nice!! U think u are gonna do it too?
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