Does it work on xDrive models? With stock down-pipes is there any improvement to turbo lag? Or any loss of torque seen with some aftermarket down-pipes?
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2013 BMW 550i xDrive Alpine White [300] | Black Dakota [LCSW] | Anthracite [4CE]
Options: M-Sport [ZMP] | DDC+ARS [ZDF] | Exec [ZDB] | Driver Assist/+ [ZDA+ZDB] | Cold [ZCW] | SAT [2TB]
Mods: MORR VS8.2 + PSS (20" 255F/285R) | ACS Springs | Dinan Stage 2 | StopTech BBK
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