428i to 435i Exhaust Conversion?

exclusivo · 10-17-2014, 09:54 AM

Quote:

Originally Posted by MattTheCarNut

What trimming does one have to do? On the exhaust end or the tip end? Can one just simply adjust the tips? I'm really OCD and would notice if the tips stick out too far or are off center.

Thanks,

Matt

From standing under the car and seeing exactly what was going on, I think the easiest method would be to cut off the entire tail pipe from the side you want to adjust, trim off a few millimeters and weld it back on. This way, it will be closer to the center. My installer wanted to try moving the bracket points on the hangers but I told him to leave it. I'm going to get some 3.5" Cyba tips and just put those on.

JDMCIVIC · 10-17-2014, 12:28 PM

Check out my thread if you were interested in the AA exhaust for your 428i. It's definately worth all the trouble. The dual exhaust looks sweet and it sounds great. I'll try and get a video up soon.

http://f30.bimmerpost.com/forums/sho...php?p=16681691

ajrettke · 10-18-2014, 12:14 PM

I called a muffler shop and they didn't want to work on the BMW because welding would cause the computer to short out they said....

Wouldn't I be able to simply disconnect the negative lead on the battery and then it could be welded with no issues?

JDMCIVIC · 10-20-2014, 02:25 PM

Quote:

Originally Posted by ajrettke

I called a muffler shop and they didn't want to work on the BMW because welding would cause the computer to short out they said....

Wouldn't I be able to simply disconnect the negative lead on the battery and then it could be welded with no issues?

Call a muffler shop that has experience working with BMWs. My shop just disconnected the battery like you stated and everything was okay.

EBIINYC · 11-19-2014, 06:26 PM

Quote:

Originally Posted by exclusivo

From standing under the car and seeing exactly what was going on, I think the easiest method would be to cut off the entire tail pipe from the side you want to adjust, trim off a few millimeters and weld it back on. This way, it will be closer to the center. My installer wanted to try moving the bracket points on the hangers but I told him to leave it. I'm going to get some 3.5" Cyba tips and just put those on.

@exclusivo What did you pay for this from start to finish and also does this all work on an x drive car as well? Because I know the piping for exhausts is usually diff on awd cars.

exclusivo · 11-20-2014, 01:50 PM

Quote:

Originally Posted by Igor1080

@exclusivo What did you pay for this from start to finish and also does this all work on an x drive car as well? Because I know the piping for exhausts is usually diff on awd cars.

exhaust $100 from forum member
Labor $75
Performance Diffuser $385 on ebay (you can find the stock diffuser much cheaper)

$560 total

Not sure what the xdrive setup is like, but I have not heard of any differences.

Matts435coupe · 05-14-2015, 06:04 PM

Just got mine done $350 all in.

Here is my before and after

http://i40.photobucket.com/albums/e2...psxeph54ri.jpg

Ilovemycar · 06-19-2015, 10:06 PM

Quote:

Originally Posted by Matts435coupe

Just got mine done $350 all in.

Here is my before and after

http://i40.photobucket.com/albums/e2...psxeph54ri.jpg

Hey can I ask where you had it done? I have the parts and I'm looking for an experienced exhaust welding place. I'm in sfl

Matts435coupe · 06-21-2015, 09:06 AM

Quote:

Originally Posted by Ilovemycar

Hey can I ask where you had it done? I have the parts and I'm looking for an experienced exhaust welding place. I'm in sfl

CM Peformance exhaust in Margate. It took less then an hour and he charged me $150.00

Ilovemycar · 06-24-2015, 12:59 PM

Quote:

Originally Posted by Matts435coupe

Quote:

Originally Posted by Ilovemycar

Hey can I ask where you had it done? I have the parts and I'm looking for an experienced exhaust welding place. I'm in sfl

CM Peformance exhaust in Margate. It took less then an hour and he charged me $150.00

How did you do the diffuser ? Did you/they remove it for you there or how did you do it ? I want to go this week and get it done.

TheInnerG · 07-22-2015, 04:01 PM

I am thinking about doing the same swap OP mentioned. I would like to change my (428i) single side exhaust to a (435) dual M performance exhaust. I have seen some people swap it to the 435 stock exhaust, but I wanted to confirm that I could also do it with a m-performance one.

Has anyone found video clips of how the swap sounds?

Do I just need to purchase a dual rear diffuser and m-performance exhaust then find a muffler shop that will install it?

zman1237 · 10-03-2015, 01:23 PM

Do I buy the 435 or the 428 clamp?

And if I bring it to a shop, I don't need to buy a clamp because they will just weld it?

PCR0303 · 10-03-2015, 02:14 PM

Quote:

Originally Posted by zman1237

Do I buy the 435 or the 428 clamp?

And if I bring it to a shop, I don't need to buy a clamp because they will just weld it?

You will need a 428 clamp. I forgot to purchase one and since the 435 one didn't fit, I just had it welded. Yes you can just weld it if you'd like.

zman1237 · 10-03-2015, 02:19 PM

Quote:

Originally Posted by PCR0303

Quote:

Originally Posted by zman1237

Do I buy the 435 or the 428 clamp?

And if I bring it to a shop, I don't need to buy a clamp because they will just weld it?

You will need a 428 clamp. I forgot to purchase one and since the 435 one didn't fit, I just had it welded. Yes you can just weld it if you'd like.

Okay cool so I don't need to have a special piece fabricated because the diameters are different? It it's simply a matter of cutting and clamping together with the 428 clamp, I can definitely do that myself. The 428 clamp slides over the 335 exhaust even though the diameters are different?

PCR0303 · 10-03-2015, 07:22 PM

Quote:

Originally Posted by zman1237

Okay cool so I don't need to have a special piece fabricated because the diameters are different? It it's simply a matter of cutting and clamping together with the 428 clamp, I can definitely do that myself. The 428 clamp slides over the 335 exhaust even though the diameters are different?

I'm not entirely sure to be honest. I just know that the 435 clamp didn't work and you would need the 428 clamp if you don't weld. I had mine welded. Also I used a 435 MPE.

n00bim2015 · 10-07-2015, 09:52 PM

Quote:

Originally Posted by exclusivo

You'll notice that my right tip is off center, some people say theirs lined up, some said they had to maneuver the muffler hangers, some say one tip sticks out further than the other...I decided to just leave it as is because I plan on changing the tips, so when the shop welds it, they can just cut it to fit.

hey buddy, have you done any research to tell if the duel sided exhaust has better/louder sounds than the single side 28i version?

Bluesummer · 10-25-2015, 05:57 PM

So would the 335 M performance Exhaust work on 328?

tboooe · 10-25-2015, 07:05 PM

Quote:

Originally Posted by Bluesummer

So would the 335 M performance Exhaust work on 328?

You would have to do the same mods to make it work. There needs to be adapter piece made to allow the exhaust to mate with the cars exhaust. You also need a new diffuser.

zman1237 · 10-25-2015, 09:10 PM

I am planning on getting mine done tomorrow. Very excited! Will post pictures.

tboooe · 10-25-2015, 09:31 PM

Quote:

Originally Posted by zman1237

I am planning on getting mine done tomorrow. Very excited! Will post pictures.

Sweet. Looking forward to seeing that rear diffuser!

While you are at it either cut or move the exhaust tip locating pins. Check out my build thread for more info on what I did.

zman1237 · 10-28-2015, 10:55 AM

Finally got this done! Thanks for everyones help. Please see my thread for pics.

http://f30.bimmerpost.com/forums/sho....php?t=1189282

gumbico · 11-25-2015, 09:23 AM

Just wanted to chime in and say thanks to all the folks that went before me with the 428i exhaust conversion. Also, I wanted to add a few notes for anyone looking to use the exhaust from a 435 instead of the 335 on their F32.

I found a 435 exhaust on ebay ($250 shipped) with less than 5k miles on it after the owner swapped it out for the MPE. Based on what I had read online, I was expecting the hanger for the right tailpipe to be off and that the tip itself would be off center. Well, that's not the case with the 435 exhaust. The rods fit right into the hangers and the tip is centered. I used the generic M performance diffuser from Bavauto ($170 shipped). Lastly, because my car is owned, I decided to forego the clamp and had the main pipes welded directly to each other. Labor was another $170 here in Tyson's Corner, VA. So for around $600, I was finally able to restore some symmetry to the rear-end of my car.

Immediately I was loving the look. But after they started her up and rolled off of the lift, the louder low rumble planted a big ass grin on my face.

10-17-2014, 12:28 PM	#24
JDMCIVIC Enlisted Member 11 Rep 44 Posts Drives: BMW 435i Join Date: Aug 2014 Location: Carlsbad, CA iTrader: (0)	Check out my thread if you were interested in the AA exhaust for your 428i. It's definately worth all the trouble. The dual exhaust looks sweet and it sounds great. I'll try and get a video up soon. http://f30.bimmerpost.com/forums/sho...php?p=16681691
	Appreciate 1 PrMaX14.00 Quote

10-18-2014, 12:14 PM	#25
ajrettke Private First Class 20 Rep 175 Posts Drives: 2014 F30 335i Msport Join Date: Mar 2009 Location: Dumfries, VA iTrader: (1)	I called a muffler shop and they didn't want to work on the BMW because welding would cause the computer to short out they said.... Wouldn't I be able to simply disconnect the negative lead on the battery and then it could be welded with no issues?
	Appreciate 0 Quote

05-14-2015, 06:04 PM	#29
Matts435coupe Major 111 Rep 1,262 Posts Drives: 2014 BMW 435i Coupe Msport 6MT Join Date: Sep 2009 Location: Fort Lauderdale, Florida iTrader: (1)	Just got mine done $350 all in. Here is my before and after http://i40.photobucket.com/albums/e2...psxeph54ri.jpg __________________ 2013 BMW 335is Coupe AW/CR 6MT 2012 BMW 335 coupe ( Sold) 2012 Audi S5 coupe( Sold) 2010 BMW 335i coupe( Sold) 2009 BMW 335i coupe ( Sold)
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07-22-2015, 04:01 PM	#33
TheInnerG New Member 3 Rep 14 Posts Drives: 428i F32 Manual Join Date: May 2015 Location: Orange County, California iTrader: (0)	I am thinking about doing the same swap OP mentioned. I would like to change my (428i) single side exhaust to a (435) dual M performance exhaust. I have seen some people swap it to the 435 stock exhaust, but I wanted to confirm that I could also do it with a m-performance one. Has anyone found video clips of how the swap sounds? Do I just need to purchase a dual rear diffuser and m-performance exhaust then find a muffler shop that will install it?
	Appreciate 0 Quote

10-03-2015, 01:23 PM	#34
zman1237 Second Lieutenant 51 Rep 247 Posts Drives: F12 M6, F32 428i M-Sport Join Date: Sep 2015 Location: Texas iTrader: (0)	Do I buy the 435 or the 428 clamp? And if I bring it to a shop, I don't need to buy a clamp because they will just weld it? __________________ F32 M-Sport F12 M6 Competition
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10-25-2015, 05:57 PM	#39
Bluesummer Lieutenant General 588 Rep 15,818 Posts Drives: slower than Ayrton Senna Join Date: Dec 2006 Location: SoCal iTrader: (15) Garage List 2017 BMW X5M [0.00] 2015 M4 [0.00] 2011 E82 135 [0.00] 2011 M3 [0.00] 2007 335 [0.00]	So would the 335 M performance Exhaust work on 328? __________________ IG:d.violet.m3
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10-25-2015, 09:10 PM	#41
zman1237 Second Lieutenant 51 Rep 247 Posts Drives: F12 M6, F32 428i M-Sport Join Date: Sep 2015 Location: Texas iTrader: (0)	I am planning on getting mine done tomorrow. Very excited! Will post pictures. __________________ F32 M-Sport F12 M6 Competition
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10-28-2015, 10:55 AM	#43
zman1237 Second Lieutenant 51 Rep 247 Posts Drives: F12 M6, F32 428i M-Sport Join Date: Sep 2015 Location: Texas iTrader: (0)	Finally got this done! Thanks for everyones help. Please see my thread for pics. http://f30.bimmerpost.com/forums/sho....php?t=1189282
	Appreciate 0 Quote

11-25-2015, 09:23 AM	#44
gumbico New Member 2 Rep 12 Posts Drives: 2016 435i M-Sport 6MT Join Date: Jul 2015 Location: Northern VA iTrader: (0)	Just wanted to chime in and say thanks to all the folks that went before me with the 428i exhaust conversion. Also, I wanted to add a few notes for anyone looking to use the exhaust from a 435 instead of the 335 on their F32. I found a 435 exhaust on ebay ($250 shipped) with less than 5k miles on it after the owner swapped it out for the MPE. Based on what I had read online, I was expecting the hanger for the right tailpipe to be off and that the tip itself would be off center. Well, that's not the case with the 435 exhaust. The rods fit right into the hangers and the tip is centered. I used the generic M performance diffuser from Bavauto ($170 shipped). Lastly, because my car is owned, I decided to forego the clamp and had the main pipes welded directly to each other. Labor was another $170 here in Tyson's Corner, VA. So for around $600, I was finally able to restore some symmetry to the rear-end of my car. Immediately I was loving the look. But after they started her up and rolled off of the lift, the louder low rumble planted a big ass grin on my face.
	Appreciate 0 Quote