do88 J-Pipe Intercooler-to-Throttle Body – BMW M3 / M4 / M2 Competition (F8x, S55)

OVERVIEW

The plastic J-pipe from the S55 intercooler to the throttle body is another factory part that cracks under boost and leaves you with a boost leak. The do88 TR-250-S replaces it with a cast 6061 aluminum pipe.

It's 3.5" (89 mm) against the factory 3.3" (85 mm) and holds that diameter all the way to the throttle body. Two 1/8-27 NPT ports, plugged on delivery, take methanol or nitrous injection or a boost gauge line, and a stainless steel C-clip replaces the factory plastic throttle body clip.

SPECS

• Cast 6061 aluminum, freeform routing from a 3D scan
• 3.5" (89 mm) diameter vs 3.3" (85 mm) OE, constant to the throttle body
• Two 1/8-27 NPT ports for methanol/nitrous or a boost gauge, plugged on delivery
• Stainless steel throttle body C-clip
• Replaces OE 11618057992

PARTS INCLUDED

• 1 × do88 cast aluminum J-pipe
• 1 × matte black silicone coupler
• Matte black hose clamps
• 1 × stainless steel throttle body C-clip
• 2 × 1/8-27 NPT blanking plugs

TECH RESOURCES

• Required extras: none.
• Installation instructions (do88): TR-250-S S55 J-pipe installation instructions (PDF)
• Installation notes: remove the engine cover and OE J-pipe, fit the do88 pipe with the silicone coupler at the intercooler and the stainless C-clip at the throttle body. Leave the NPT ports plugged unless you're running injection or a gauge.
• Pairs well with: the do88 TR-240-SS turbo-to-intercooler pipes.
• Tuning: pairs with the Bootmod3 S55 Tune – BMW M3 / M4 / M2 Competition (F8x) and the Burger Motorsports JB4 Tuner – BMW M3 / M4 / M2C (S55, F8x).
• No CARB EO is published for this part — off-road / competition use only in California.
• Price is for the item only; labor is not included.

PART NUMBER

• TR-250-S — do88 Intercooler J-Pipe, BMW F8X M2C / M3 / M4

VEHICLE APPLICATIONS