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2020 - 2022 LM2 Duramax Throttle Valve Upgrade

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Upgrade your Factory LM2 Intake Air Control Valve


The LM2 features a 2.09 inch inlet and has a throttle blade affixed to a blade retainer. This is the largest flow restriction point in the LM2 intake tract with every other point being larger than 2.09 inches. Our upgraded IAV Features a 2.26 inch inlet and no blade to restrict flow.

Removal of the throttle blade means removing the possibility of the 2 fastener screws from backing out and being consumed by the motor.


We also incorporated 1 NPT connection point for adding a mechanical boost gauge or water/meth or performing a simple boost leakdown on the system



  • No throttle blade (race use only)
  • 1 NPT connection for connecting Boost, Water/Methanol, Nitrous, or Boost leakdown equipment
  • Back cut machined lip for maximum grip on heat exchanger boot
  • Will work with factory or aftermarket Heat exchanger boots

Designed to be replaced in under 30 minutes for hassel free installation.


** Race applications only, custom tuning is required ** - There are no refunds on this product after purchase. If you do not understand what you are purchasing please call us PRIOR to placing an order.