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Technical Topics B48 4-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications Mount M340i exhaust tips to 330i - compatibility?

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      08-17-2019, 07:18 AM   #1
mickiii
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Mount M340i exhaust tips to 330i - compatibility?

Hi,

I am getting my new G21 330i M-sport at the end of October and currently planning all my mods and purchases. Among these are swapping out the diffuser and exhaust tips for the ones on the M340i. I just like the square ones better .

My question is whether this would be possible without too much effort? I have tried to do my due dilligence on realoem, but I could use some input. The tips on the 330i M-sport are 90mm in diameter, but what is the diameter on the ones on the M340i? Also, does anyone know the placement of the exhaust between the two, i.e. the length between each tip?

I am hoping the this is a simple swap with parts: 51128058659 + 51128058660 + 51128069391. Simply pull of existing tips, diffuser and mount the new tips. As far as I can see, the rear bumper is the same on both, so the diffuser should match.

Thanks a bunch to anyone that can help with this!
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      08-18-2019, 04:29 AM   #2
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Quote:
Originally Posted by mickiii View Post
Hi,

I am getting my new G21 330i M-sport at the end of October and currently planning all my mods and purchases. Among these are swapping out the diffuser and exhaust tips for the ones on the M340i. I just like the square ones better .

My question is whether this would be possible without too much effort? I have tried to do my due dilligence on realoem, but I could use some input. The tips on the 330i M-sport are 90mm in diameter, but what is the diameter on the ones on the M340i? Also, does anyone know the placement of the exhaust between the two, i.e. the length between each tip?

I am hoping the this is a simple swap with parts: 51128058659 + 51128058660 + 51128069391. Simply pull of existing tips, diffuser and mount the new tips. As far as I can see, the rear bumper is the same on both, so the diffuser should match.

Thanks a bunch to anyone that can help with this!
Just thought I’d let you know that this is posted in the wrong section of the forum, but it seems you have it all figured out. Theoretically everything should fit if you just simply replace the diffuser/tips, because the diameter of the exhaust behind all of it would be the same. You have it all figured out, I think you just have to go for it.
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      08-19-2019, 03:56 AM   #3
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Mickiii

Det passar nästan har själv tänk det samma mycket snyggare med m340 slut blåsen, tyvärr måste du kapa slutblåsen på din 330 för dom sitter högre upp på 330 än 340in

Får min nästa månad
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      08-19-2019, 02:27 PM   #4
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Quote:
Originally Posted by BMW 330E M-Performance View Post
Mickiii

Det passar nästan har själv tänk det samma mycket snyggare med m340 slut blåsen, tyvärr måste du kapa slutblåsen på din 330 för dom sitter högre upp på 330 än 340in

Får min nästa månad
Hej! For the sake of everyone reading this I'll keep it in english. So what you are saying is that the exhaust sits higher on the 330i vs the M340i? Do you know by how much?
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      09-13-2019, 03:21 PM   #5
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I would like to know this too Have you found extra info?

Edit: By comparing pictures I would say the exit pipes both sit at the very low end of the bumper. Would just need to measure both of them to see what the spacings are but seems like an exhaust company would be able to make that fit without issue (perhaps a little bit of cutting and welding) if the diffuser and bumper trim are just interchangeable.

Last edited by Bols; 09-14-2019 at 05:00 AM..
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      09-14-2019, 12:26 PM   #6
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No, I have not been able to confirm it yet. My local dealers are also unsure and unfortunately there are no M340i nearby, so I am unable to go out and take measures on my own. As I see it, the exhaust sits further "out" on the 330i, it almost look like it goes as far out as the tips sit. If this is the case, it will definitely require some cutting. In addition, it also looks like the diameter of the exhaust on the M340i is smaller than on the 330i, but again, I only have pictures to go by.

I am probably just going to buy the parts and see if they fit. Mine is a lease, so not really able to cut and weld .
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      10-14-2019, 05:27 AM   #7
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any updates ?
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      12-28-2019, 12:20 PM   #8
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Not sure if you've done this by now but guy from my country with a 330e did this conversion and said it was basically plug and play in this picture thread:

https://g20.bimmerpost.com/forums/sh...07&postcount=3
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      06-04-2021, 10:14 PM   #9
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Update

Hey did you have any luck with the whole process? I want to do it on my car too
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      06-05-2021, 06:02 PM   #10
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A lot of people have done it without any problem, just change the back plastic too
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      12-27-2021, 11:11 AM   #11
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M340i exhaust tips for 330ix — any luck

Just checking to see if anyone has tried/completed the mod?
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      12-28-2021, 05:35 AM   #12
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Quote:
Originally Posted by mickiii View Post
Hi,

I am getting my new G21 330i M-sport at the end of October and currently planning all my mods and purchases. Among these are swapping out the diffuser and exhaust tips for the ones on the M340i. I just like the square ones better .

My question is whether this would be possible without too much effort? I have tried to do my due dilligence on realoem, but I could use some input. The tips on the 330i M-sport are 90mm in diameter, but what is the diameter on the ones on the M340i? Also, does anyone know the placement of the exhaust between the two, i.e. the length between each tip?

I am hoping the this is a simple swap with parts: 51128058659 + 51128058660 + 51128069391. Simply pull of existing tips, diffuser and mount the new tips. As far as I can see, the rear bumper is the same on both, so the diffuser should match.

Thanks a bunch to anyone that can help with this!
Hi! I had this Done to my 330i a few weeks ago. Not as simple, although dealer liked my idea and wanted to give it a try.

Quite a chunk of the original pipe had to be cut off. They had a 340i in the showroom which they used to measure How much had to be cut off.

Parts needed:

-51192455859 : diffusor 340i m perf
-51128079607 : bumper bracket
-51128093303 : 340i exhaust tip 1
-51128093304 : 340i exhaust tip 2

Love the outcome, pics attached. Few shots of the whole car as well, had the entire m-perf kit fitted.
Attached Images
      

Last edited by Stefferd; 12-28-2021 at 05:40 AM..
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      02-05-2022, 07:57 AM   #13
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Hi there steffard,I am looking to do this aswell to my car I have all the parts already and just need somone too fit it,if you don’t mind saying where did you get this done?Original Bmw shop?

Thanks
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      02-14-2022, 02:55 PM   #14
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Quote:
Originally Posted by Bmw_g20 View Post
Hi there steffard,I am looking to do this aswell to my car I have all the parts already and just need somone too fit it,if you don’t mind saying where did you get this done?Original Bmw shop?

Thanks
My bmw dealer sorted me out
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      02-26-2022, 04:39 AM   #15
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I went to my bmw dealer to ask if they do it,they told me they do not do anything other than original bmw parts.
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      03-27-2022, 05:07 AM   #16
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Hi,I want to get this done to my car but I don’t know how much to cut off,where to mount it,how to mount it and stuff like that.so I was just wondering if I could get some help,do you have any social media I can message you as it is easier?
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      03-27-2022, 05:08 AM   #17
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Quote:
Originally Posted by Stefferd View Post
My bmw dealer sorted me out
Hi,I want to get this done to my car but I don’t know how much to cut off,where to mount it,how to mount it and stuff like that.so I was just wondering if I could get some help,do you have any social media I can message you as it is easier?
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      06-14-2022, 07:47 PM   #18
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Hey guys! Does anyone purchase G20 330i M Performance Exhaust without the M Performance Tips, then try to modify it with the stock 340i diffuser set up? I know you might of to cut the Exhaust a little shorter. I think that just save about $600-$700 just for tips.

Let me know what you guys think?

Cheers!
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      07-01-2022, 01:12 AM   #19
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Quote:
Originally Posted by Stefferd View Post
My bmw dealer sorted me out
Hi Steffard,

Im going to do the same as you, living in the Netherlands which bmw dealer have you done it with? I might give them a call since they already know what to do. You can also give me text on 0620527744.

Groet,
Jurryt
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