Do88 BMW F8X M2C M3 M4 Intercooler J-pipe, Intercooler-Throttle body

do88 performance intercooler to throttle body J-pipe designed for an easy drop-in-fitment in your BMW M2 / M3 / M4 F8X

The S55 twin-turbo engine that powers the BMW M2C / M3 / M4 F8X is equipped with plastic intercooler pipes on both the hot and cold side. These pipes are a week link on any tuned car or in some cases even on a stock tune. The OE plastic pipes often crack / split leaving you with a boost leak.

With our performance intercooler J-pipe, we like to offer a solution for the reliability issue and of course at the same time minimize the restrictions by improving the air flow!

To get an exact 3D-model of the available space to design our intercooler pipe in we did a detailed 3D-scan of our M3 Competition engine bay. With the help of this 3D-scan model we could design a new 3,5”; (89mm) casting J-pipe with nice smooth routing. Most aftermarket J-pipes on the market is made of mandrel bent 3”; pipes cut and welded in several pieces to achieve the J-shape. The OE J-pipe is 3,3”; (85mm) so it is clear a 3”; version is not ideal in terms of airflow, which also have confirmed in our Superflow flow bench.

Our final design is a super durable 3,5”; (89mm) casting J-pipe which improves the airflow. It has a free form shape with same diameter all the way to the throttle body which is “impossible”; to achieve with mandrel bent pipe. Our J-pipe has two methanol injection connection (1/8 -27 NPT) which is blanked off with plugs at delivery. A more durable silicone hose is also included together with matte black hose clamps for a clean stealthy look. A new C-clip is included to fasten the J-pipe to the throttle body instead of the flimsy OE plastic retaining clip.

Significant advantages with do88 performance intercooler J-pipe:
– Improved reliability!
– 6061 Aluminum instead of plastic
– Stainless steel throttle body C-clip
– Matt black silicone hose coupler included
– Up to X% better air flow!
– 2x 1/8-27 NPT connections that can be used for methanol/nitrous injection or as vacuum port fitting for pressure gauge. Blanking plugs are included!

This diagram shows the charge air flow at different pressure drops of do88 pressure pipes compared to OEM pipes: