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      11-01-2012, 01:54 PM   #245
C ///M
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Drives: '07 X3 M-Sport
Join Date: May 2010
Location: Chicago

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Could someone explain or try to explain the areas where the x-drive vs non downpipes differ? My application is a bit on the unique side. My N54 is going to sit in an E83 X3 chassis, so I have more space than a standard 3 series. That being said, being an x-drive car, is the space constraint on the transmission and front transfer case side? Sorry for the stupid question.

I've tried looking at pictures, but its hard to tell, haven't seen a good X-drive downpipes installed photo. I feel like the standard downpipes are less restrictive even though both have to neck-down to 2.5", the x-drive variant just having to do it sooner...
Prototype 2007 Monaco E83 'X3M' | N54 Swap | Dual Cone | VRSF CP & DPs | CXR Intercooler | ER Dual Oil Coolers | Dual 2.5" w/X-Pipe | M3 Rear Exhaust | 20" BC Forged HB05 | Michelin PSS 265 & 305 | F10 M5 & F80 M3 Brakes | KW Variant 2 | H&R Swaybars | TMS Z4M Camber Arms | Z4 Finned Diff | BMW Perf. Grills w/Tri-Color | Custom M Aerodynamics | CF Trim | M Perf. Carbon Shift & Handbrake Knobs | BMW Perf. SS Pedals | M3 Dead Pedal | V1 Hardwired | Int LEDs | Umnitza Orion v4 AE & More