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E90/E92/E93 Charge pipe

Why do it

Tools you'll need

• Socket set
• Flathead screwdriver
• Pliers
• Socket set
• Flathead screwdriver
• Pliers

Starting out? See our budget tool list.

Parts to buy

• VRSF 10901020D charge pipe kit (N54) Pick the OEM DV flange. Replaces the plastic pipe that cracks under boost.Fits 2007–2013 · 335i (N54), 335xi (N54), 335is
• VRSF 10901020D charge pipe kit, N55 flange (N55) Pick the N55 flange. The same brand of pipe as our video.Fits 2011–2013 · 335i (N55), 335i xDrive (N55)

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Steps

1. Prep the new pipe

   • Fit the couplers and clamps to the new pipe loosely.
   ▶ Watch this step (Vehicular DIY, VRSF on an N54) (1:34–2:23)

2. Remove the stock pipe

   • Remove what's in the way, then pull the C-clip at the throttle body and lift out the plastic pipe.
   ▶ Watch this step (2:23–5:53)

3. Install the new pipe

   • Seat the pipe on the throttle body, refit the clip and tighten the clamps.
   ▶ Watch this step (8:32–11:32)

4. Reassemble

   • Refit everything you removed and check that all the hoses are connected.
   ▶ Watch this step (11:32–14:14)

5. Remove the stock pipe

   • Disconnect the clamps and lift out the plastic pipe.
   ▶ Watch this step (werqshop, on an E92 335i) (0:41–1:31)

6. Install the new pipe

   • Fit the new pipe and tighten the clamps.
   ▶ Watch this step (2:22–3:08)

7. Check the O-ring

   • Make sure the O-ring is seated, or the pipe won't seal.
   ▶ Watch this step (4:25–4:37)

8. Finish up

   • Refit what you removed and test it.
   ▶ Watch this step (4:37–6:28)

How to know it worked

• No boost leaks.
• No check-engine light.
• No boost leaks.
• No check-engine light.

Follow your part's instructions and your service manual's torque specs.