do88 Performance Intercooler J-Pipe (Intercooler to Throttle Body) — BMW M2C / M3 / M4 (F8X)

The S55 uses plastic charge pipes on both the hot and cold sides. They crack and split under boost — a routine failure on tuned cars and not unheard of on stock ones — leaving you with a boost leak. This replaces the cold-side pipe with cast aluminium.

do88 3D-scanned an M3 Competition engine bay, then designed a 3.5" (89mm) cast J-pipe with smooth routing and a consistent diameter all the way to the throttle body — a shape that isn't achievable with mandrel-bent tube.

Key Benefits

• 6061 aluminium instead of plastic — eliminates the OE crack/split failure
• 3.5" (89mm) constant-diameter freeform casting for improved flow
• Stainless steel throttle body C-clip replaces the flimsy OE plastic retaining clip
• 2x 1/8-27 NPT ports for methanol/nitrous injection or a boost gauge vacuum feed — blanking plugs included
• Matte black silicone hose coupler and clamps included

Fits BMW M2 Competition F87 (2019–2020), M3/M3 Competition F80 (2015–2018), M4/M4 Competition/GTS/CS F82 F83 (2015–2020).

Pairs with the do88 Intercooler Pipes (turbo to intercooler) to replace the plastic pipework on both the hot and cold sides.