Options to get rid of the 335i xDrive secondary cats?

D.I.P. · 03-29-2016, 09:12 PM

I am looking to eliminate the secondary cats on my 2011 335i Xdrive. I know most people seem to just cut the cats off and have an exhaust shop weld on some SS piping in their place but I would rather keep the stock mid pipes intact so that i can go back to stock in the future. That being said will these Borla "test pipes" fit on an N55 exhaust?

https://www.turnermotorsport.com/p-3...lete/?pdk=AQEB

They are listed as 07-10 for N54 even though when i filter the options on Turner's website for my specific year and model it still shows up... Forgive my ignorance but i recall back when i had my N54 135i a lot of the guys were swapping out their catted N54 mid-pipes for cat-less N55 ones so i am wondering if they are interchangeable for the 335i's as well.

thanks

JETmn · 03-30-2016, 08:24 AM

Just get some RWD midpipes, done.

D.I.P. · 03-30-2016, 11:39 AM

Quote:

Originally Posted by JETmn

Just get some RWD midpipes, done.

RWD mid pipes are interchangeable with XDrive Mid-Pipes? I always see exhausts listed as RWD only or AWD Only so where exactly are the differences in the RWD and Xdrive exhaust systems and what parts are interchangeable?

JETmn · 03-31-2016, 12:24 PM

Quote:

Originally Posted by D.I.P.

RWD mid pipes are interchangeable with XDrive Mid-Pipes? I always see exhausts listed as RWD only or AWD Only so where exactly are the differences in the RWD and Xdrive exhaust systems and what parts are interchangeable?

I haven't done it myself, but I have seen some other people do it. It sounded like a direct fit. What exhausts show a different one for rwd vs awd?

joshe92 · 03-31-2016, 12:30 PM

Please post a before and after video of your set-up with and without the secondary cats. I'm curious of how removing the secondary cats will affect the sound

03-29-2016, 09:12 PM	#1
D.I.P. Private First Class 25 Rep 133 Posts Drives: 11' 335i xDrive Join Date: May 2009 Location: NJ iTrader: (0)	Options to get rid of the 335i xDrive secondary cats? I am looking to eliminate the secondary cats on my 2011 335i Xdrive. I know most people seem to just cut the cats off and have an exhaust shop weld on some SS piping in their place but I would rather keep the stock mid pipes intact so that i can go back to stock in the future. That being said will these Borla "test pipes" fit on an N55 exhaust? https://www.turnermotorsport.com/p-3...lete/?pdk=AQEB They are listed as 07-10 for N54 even though when i filter the options on Turner's website for my specific year and model it still shows up... Forgive my ignorance but i recall back when i had my N54 135i a lot of the guys were swapping out their catted N54 mid-pipes for cat-less N55 ones so i am wondering if they are interchangeable for the 335i's as well. thanks __________________ 08 135i Coupe 6sp ///M Sport - on jackstands 11 335i X-Drive Sedan 6AT ///M Sport - SOLD - PPK - xHP Flash - MHD Stage 2+ - VRSF 3.5" DP - VRSF CP - VRSF 5" FMIC - AA GREEN FILTER 09 135i Coupe 6sp ///M Sport - SOLD - SSK - RL DP's - JB4 - BMS DCI
	Appreciate 0 Tweet Quote

03-30-2016, 08:24 AM	#2
JETmn Lieutenant Colonel 245 Rep 1,595 Posts Drives: 2011 335i xDrive Msport Join Date: Apr 2013 Location: Orlando iTrader: (0) Garage List 2011 335Xi [0.00]	Just get some RWD midpipes, done.
	Appreciate 0 Quote

03-31-2016, 12:30 PM	#5
joshe92 Major 86 Rep 1,046 Posts Drives: 2017 F80 M3 Join Date: Mar 2014 Location: Detroit, MI iTrader: (-1)	Please post a before and after video of your set-up with and without the secondary cats. I'm curious of how removing the secondary cats will affect the sound __________________ 2017 F80 M3 competition Sakhir Orange: // ER catless downpipes, // AA EL midpipe resonated, // MHD tune Retired: E92 335i MSport Sapphire black: // aFe intake // Remus quad // AR Downpipe, Secondary cat delete // MHD // BMW PPK // Alpina B3 Flash // Vrsf 5" Stepped IC & CP
	Appreciate 0 Quote