Exhaust change? rear diffuser

chukzn17 · 05-21-2016, 03:17 PM

got a f30 m sport with M Perf rear diffuser, want to upgrade the exhaust as it has a thin pencil tail on it , ive been quoted £400 form EMP performance in st albans to install me a dual split exhaust but have to buy another rear diffuser, any one know decent ones ? cheaper than BMW's £500 one ! ive seen a few on ebay but wanted to know if you guys have bought/seen them ?

hope ya'll can help

teaston · 05-22-2016, 02:31 AM

These guys are very reputable, I bought mine a couple of years ago and it did just needs the moulding lip on the top of the splitter filed off for it to fit properly.

http://www.ebay.co.uk/itm/BMW-3-Seri...25.m3641.l6368

Tengocity · 05-22-2016, 03:26 AM

I have the same one as teaston and also the same exhaust from EMP and works ok.

simon the pieman · 05-22-2016, 03:34 AM

Hi mate. I had my exhaust done at emp. They were very good.
I had a twin pipe box fitted to mine but I supplied it as it is a Bmw back box from a 428i.
I bought an oem diffuser which I got for Â£320 from specialist cars.
Oem ones are a better fit but if you can be bothered to fiddle with an aftermarket one you can save some pennies.

I thought I'd seen another white f30 with m performance kit on in Stevenage.
Nice car.

chukzn17 · 05-22-2016, 08:15 AM

Quote:

Originally Posted by Tengocity

I have the same one as teaston and also the same exhaust from EMP and works ok.

Any photos mate?

F30_Jonny · 05-22-2016, 04:44 PM

Hi,

im new to the site but just to let you know i purchased this: http://www.ebay.co.uk/itm/2819136686...%3AMEBIDX%3AIT

It came very fast and fitted OEM, the item was a little straight and needed bending as they are slightly curved but it fit nice.

I also payed £300 for my back box deleting and a Y piece putting in with quad tips. I will try get some pictures up tomorow pal.

Tengocity · 05-22-2016, 05:03 PM

Quote:

Originally Posted by chukzn17

Any photos mate?

Here you go- my original thread on it:

http://f30.bimmerpost.com/forums/sho....php?t=1106225

chukzn17 · 05-24-2016, 11:33 AM

Ordered new diffuser from last lane styling in romford £140! , and booking exhaust with EMP , £400 for split exhuast and tips , and they'll fit my diffuser aswell!

chukzn17 · 05-27-2016, 03:09 PM

Quote:

Originally Posted by F30_Jonny

Hi,

im new to the site but just to let you know i purchased this: http://www.ebay.co.uk/itm/2819136686...%3AMEBIDX%3AIT

It came very fast and fitted OEM, the item was a little straight and needed bending as they are slightly curved but it fit nice.

I also payed £300 for my back box deleting and a Y piece putting in with quad tips. I will try get some pictures up tomorow pal.

thanks , did deleting back box make much difference to sound?

chukzn17 · 06-03-2016, 03:11 AM

Just took car to emp , getting 3.5" slashed style tips , in black . Hopefully be 3 hours

Rukka · 06-03-2016, 03:16 AM

Quote:

Originally Posted by chukzn17

Just took car to emp , getting 3.5" slashed style tips , in black . Hopefully be 3 hours

Cool

Don't forget to post the obligatory pics once its done

.

chukzn17 · 06-03-2016, 07:20 AM

Done! And i love it ! Doesnt sound any different , well maybe slighty ! But i mean slightly ! , not bothered about that though as it was only for looks , and boy i think it looks better ! , the undertray stayed off as he didnt want to cut it to fit new exhaust , but im not bothered , and he didnt even notice the rear diffuser wasnt OEM , but im really happy with the look , didnt want chrome as i have no chrome on the car , i have a big smile now

NISFAN · 06-03-2016, 07:46 AM

Looking good. Same as mine although I have the standard 335i rear valance.

You were mentioning an undertray? Where does it fit and what does it look like please?

chukzn17 · 06-03-2016, 07:55 AM

Quote:

Originally Posted by NISFAN

Looking good. Same as mine although I have the standard 335i rear valance.

You were mentioning an undertray? Where does it fit and what does it look like please?

Its the undertray that comes oem with the car mate , they took it off so could fit the exhaust , its normally on to protect it all , but they didnt want to cut it so just took it off

NISFAN · 06-03-2016, 08:03 AM

Quote:

Originally Posted by chukzn17

Its the undertray that comes oem with the car mate , they took it off so could fit the exhaust , its normally on to protect it all , but they didnt want to cut it so just took it off

Is it about mid car? or at the back?

Reason I ask is I'm looking to fabricate an undertray, would be nice if there was an OEM one available. The 330d doesn't have any trays mid car back.

Just looked on REALOEM, it looks like the 320d /320i has a rear aerodynamic undertray......I want one!!!! The 330d/335d doesn't have this tray, which is probably not a problem with the original silencer as it forms a surface for the air to flow over. With no back box, it will cause a right lot of turbulence, and turn the bumper into a parachute.

chukzn17 · 06-03-2016, 08:20 AM

Quote:

Originally Posted by NISFAN

Quote:

Originally Posted by chukzn17

Its the undertray that comes oem with the car mate , they took it off so could fit the exhaust , its normally on to protect it all , but they didnt want to cut it so just took it off

Is it about mid car? or at the back?

Reason I ask is I'm looking to fabricate an undertray, would be nice if there was an OEM one available. The 330d doesn't have any trays mid car back.

Its this one mate , go exactly underneath the oem exhaust

NISFAN · 06-03-2016, 08:23 AM

Quote:

Originally Posted by chukzn17

Its this one mate , go exactly underneath the oem exhaust

Thank you!!! you've fired a eureka moment

05-21-2016, 03:17 PM	#1
chukzn17 First Lieutenant 154 Rep 348 Posts Drives: 2013 320d msport M Performance Join Date: Apr 2016 Location: Uk iTrader: (0)	Exhaust change? rear diffuser got a f30 m sport with M Perf rear diffuser, want to upgrade the exhaust as it has a thin pencil tail on it , ive been quoted £400 form EMP performance in st albans to install me a dual split exhaust but have to buy another rear diffuser, any one know decent ones ? cheaper than BMW's £500 one ! ive seen a few on ebay but wanted to know if you guys have bought/seen them ? hope ya'll can help
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05-22-2016, 02:31 AM	#2
teaston Banned 11002 Rep 32,881 Posts Drives: X3 M40d Join Date: May 2012 Location: The High Seas iTrader: (1)	These guys are very reputable, I bought mine a couple of years ago and it did just needs the moulding lip on the top of the splitter filed off for it to fit properly. http://www.ebay.co.uk/itm/BMW-3-Seri...25.m3641.l6368
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05-22-2016, 03:26 AM	#3
Tengocity General 8576 Rep 19,982 Posts Drives: 911, Cayenne Turbo, Disco 4 Join Date: Sep 2013 Location: Crieff, Perthshire, Scotland iTrader: (0)	I have the same one as teaston and also the same exhaust from EMP and works ok. __________________ Current: Porsche 911 991 C4S, Porsche Cayenne Turbo, Land Rover Discovery 4. Gone...G01 X3 M40i, Cayman S 987, F31 340i, Cayman GT4, F82 M4 CP, Lotus Exige V6, G20 330e, F30 330e, Boxster S 987, F31 335d, Mini Cooper SD, E89 Z4, E90 330d 320d, E60 520d, E46 330d 320d, MX5s, E30 325i
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05-22-2016, 03:34 AM	#4
simon the pieman Captain 239 Rep 833 Posts Drives: f44 M235i gran coupe Join Date: Jun 2015 Location: hertfordshire iTrader: (0)	Hi mate. I had my exhaust done at emp. They were very good. I had a twin pipe box fitted to mine but I supplied it as it is a Bmw back box from a 428i. I bought an oem diffuser which I got for Â£320 from specialist cars. Oem ones are a better fit but if you can be bothered to fiddle with an aftermarket one you can save some pennies. I thought I'd seen another white f30 with m performance kit on in Stevenage. Nice car.
	Appreciate 1 Quote

05-22-2016, 04:44 PM	#6
F30_Jonny New Member 9 Rep 26 Posts Drives: F30 330D Msport Mperformance Join Date: May 2016 Location: Leeds iTrader: (0)	Hi, im new to the site but just to let you know i purchased this: http://www.ebay.co.uk/itm/2819136686...%3AMEBIDX%3AIT It came very fast and fitted OEM, the item was a little straight and needed bending as they are slightly curved but it fit nice. I also payed £300 for my back box deleting and a Y piece putting in with quad tips. I will try get some pictures up tomorow pal.
	Appreciate 0 Quote

05-24-2016, 11:33 AM	#8
chukzn17 First Lieutenant 154 Rep 348 Posts Drives: 2013 320d msport M Performance Join Date: Apr 2016 Location: Uk iTrader: (0)	Ordered new diffuser from last lane styling in romford £140! , and booking exhaust with EMP , £400 for split exhuast and tips , and they'll fit my diffuser aswell! __________________ I LOVE BMW
	Appreciate 0 Quote

06-03-2016, 03:11 AM	#10
chukzn17 First Lieutenant 154 Rep 348 Posts Drives: 2013 320d msport M Performance Join Date: Apr 2016 Location: Uk iTrader: (0)	Shes in! Just took car to emp , getting 3.5" slashed style tips , in black . Hopefully be 3 hours __________________ I LOVE BMW
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06-03-2016, 07:20 AM	#12
chukzn17 First Lieutenant 154 Rep 348 Posts Drives: 2013 320d msport M Performance Join Date: Apr 2016 Location: Uk iTrader: (0)	Done! And i love it ! Doesnt sound any different , well maybe slighty ! But i mean slightly ! , not bothered about that though as it was only for looks , and boy i think it looks better ! , the undertray stayed off as he didnt want to cut it to fit new exhaust , but im not bothered , and he didnt even notice the rear diffuser wasnt OEM , but im really happy with the look , didnt want chrome as i have no chrome on the car , i have a big smile now Attached Images __________________ I LOVE BMW
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06-03-2016, 07:46 AM	#13
NISFAN Major General 3492 Rep 9,708 Posts Drives: BMW M2 Join Date: Aug 2012 Location: Bedford UK iTrader: (0)	Looking good. Same as mine although I have the standard 335i rear valance. You were mentioning an undertray? Where does it fit and what does it look like please?
	Appreciate 0 Quote