Yes i was getting a fuel smell out the back i took the car to bmw after i took my jb4 off and left my intake on my service adviser told me nothing would really void my extended warranty besides bigger turbos or serious engine mods alike. it ended up being just one coil on the first cylinder got my car back this morning and put the jb4 back on and my Active DP's are going in tomorrow hopefully and he also offered me a bmw performance exhaust that was coming off a car they were trying to total from a newer 135 for free!
08 n54 135i Alpina AT 78k
Engine: JB4 e45/93, BMS Tstat, AFE DCI, VRSF 5" Stepped FMIC, VRSF Upper/Lower CP
Exhaust: Active DP, n55 Mids (Next), Berk Ceramic Delete
Exterior: Cree LED AE, Matte Kidney, Ambergone, Tint Front 50%/2%/0% Rear + Taillights
Tires: Nitto 555 265/35, Nitto 555 225/40