BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST - View Single Post - (N47 328d) Can I Build A Twin-Exit Rear Exhaust Without Modifying DEF?

pashad13 · 01-18-2024, 06:21 PM

I have a 2015 328d m sport wagon. Ordered an AK style twin exit diffuser, and therefore want to have an exhaust shop build me a custom rear end that is a straight pipe to a twin-exit.

I haven't lifted the car up as I've only bought it a few months ago -- does the DEF connect to the midpipe section or the muffler section? Is it possible to have an exhaust like this built without needing to modify the DEF portion?

Thanks all.

01-18-2024, 06:21 PM	#1
pashad13 Pasha Dastmalchi 62 Rep 111 Posts Drives: 2019 M240i Coupe 8 Spd Auto Join Date: May 2019 Location: Laguna Beach, California iTrader: (0)	(N47 328d) Can I Build A Twin-Exit Rear Exhaust Without Modifying DEF? I have a 2015 328d m sport wagon. Ordered an AK style twin exit diffuser, and therefore want to have an exhaust shop build me a custom rear end that is a straight pipe to a twin-exit. I haven't lifted the car up as I've only bought it a few months ago -- does the DEF connect to the midpipe section or the muffler section? Is it possible to have an exhaust like this built without needing to modify the DEF portion? Thanks all. __________________ Owned: 2019 Alpine White M240i Coupe \| VRSF Catless DP \| AP Intake \| BM3 Stage 2 (Blown at 21k miles) Own: 2015 Black Saphire Metallic 328d Touring M-Sport
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