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Hey guys, so I just got in a BMS downpipe and Vishnu charge pipe which I am eager to install. The thing is I have heard of people having some rough idling issues with the N55 with JB4 + Downpipe. As of now the car runs great with the JB4 as is but I'm wondering if anyone has had any success with eliminating the rough idle with the ISO upgrade? Or should I just leave it as is until after install of the dp and see how it is and go from there? I have the JB4 out now so it would be easier to cut the diode now prior to install of the dp but I'm afraid to create new problems that I might not have had before because of the ISO upgrade. Can anyone provide some insight ? I'm apprehensive to create new problems for something that is working pretty well as of now lol. Thanks guys.
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 2011 AW / CR 6MT 335i Xdrive Coupe | JB4 Stage 2 | BMS Intake | Performance Spoiler | Powder Coated Red Linea Corse 818 | Blacked Out Roof | Wrapped Interior Trim |