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Yeah I know the retrofit won't be a problem as the back box will remain however I would prefer to go custom so I can choose my own tips to be welded on as I want black instead of stainless steel. The only issue is though if I go custom then the shop want to delete the backbox altogether.
I know it shouldn't be a problem for noise or emissions but apparently you must now have the required number of silencers for your car so without the backbox I guess it would technically fail?
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BMW F30 320D EfficientDynamics
Stage 1 remap, EGR delete, 398 alloys, tinted windows, M Sport front bumper, M Performance grilles, M Performance spoiler, gloss black mirrors, tail light tints, debadged.
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