Finally installed my overkill VRSF 7.5in Race Intercooler : r/E90
VRSF 7.5 Race Intercooler | SpoolStreet Forums
VRSF 1000whp 7.5″ Stepped Race Intercooler FMIC Upgrade Kit 07-12 135i | Park Auto Motorsports
7.5" VRSF race intercooler.... review - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
Best Intercooler for BMW 135i & 335i: VRSF 7.5" Race Intercooler (N54) | BMW 135i (N54)