N52 CSL Velocity Stacks Air Intake Plenum | CSL52

Turn your N52 Velocity Stacks into a N52 CSL intake plenum to cover up all the hot intake air, a big beautiful 8.5" OD bell mouth for beautiful induction noise. This plenum will bolt on top of stainless steel baseplate for a base filtration.

This 3D printed intake plenum has 5mm of wall thickness and a closed design to block all the surrounding heat besides from the front cold side of the engine to reduce your IAT temps down to ~10C above ambient while driving,

This design also improves the air velocity to each runner improving the powerband for smoother transitions on and off throttle and full throttle pulls.

Required:

• Our PrintablesAuto Velocity Stacks with stainless steel filter option (air foam filters currently not compatible)
• (E9X) OE Power steering res bracket deleted / removed (for install and fitment)

Our KIT:

Our power steering relocation kit relocates the reservoir right beside the power steering pump, directly bolted to the block, in the prevision where other engine mount brackets would go. KIT includes:

• x1 engine mount bolt
• x1 thread chaser to bolt hole
• x1 Power Steering Relocation Bracket with x2 bolts and washers

Recommended for the N52 CSL plenum:

• Our velocity stacks heat shield (bolts to the framerail (E82, E9X)) will work, corner of the heat shield MIGHT need to be shaved a little, reduces heat from radiator heat and coolant hoses by blocking the hot side.
• A cold air feed from your lower bumper into the intake side of the engine bay.
• Power steering relocation to block kit,
• Removing the power steering res bracket (E9X) allows for easier installation of the plenum, reaching the lower bolts through that position 
• Replacing the brake booster line with Vibrant 20425 heater hose, clamp on each end. 
• If exposed plastic welds are not pleasing for you, wrapping it in silver or gold reflective tape will hide the exposed welds and improve heat deflection

Q&A:

Q: Can I use my air filter top with this plenum?

A: If you got a air filter top with a previous order, you will have to drill out the rest of the bolt hole, and with long enough bolts, it does bolt up. Fitment issues will occur (with filter top on E9X due to AC system at firewall) (Should work on Z4) 

Currently in pre-order and prototyping, shipping soon!

For offroad use only