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JMFAB Mazdaspeed V1 Billet Intake Manifold


3-4 Weeks


New for 2023 is the revised Mazdspeed billet intake manifold.  With over a decade of proven results, we felt it was time to give our Mazdaspeed intake manifold a much needed facelift. While the performance remains the same as our previous version, the biggest change to the revised intake manifold is the full billet (with the exception of the cast inlet elbow) modular bolt together design. This allows a lot more scalability for future changes compared to the previous design.  This manifold was designed to not only look awesome but to perform even better.

Each manifold is CNC machinined from high quality 6061 T6 aluminum. Radiused inlets are also CNC machined into each plenum bottom to improve airflow by 10-15%.  All components are sealed with high quality silicone orings and stainless steel hardware.

Extensive testing was done on various setups and improvements were made in every aspect.  Even on a stock turbo car with no additional tuning and simple bolt ons the intake manifold produced an additional 8hp/11ft-lbs and drivability was improved greatly.  Adding this manifold to a more serious setup yielded gains of 45hp with no additional tuning.  With a proper tune and setup 60hp gains can be expected!

Every effort was made to keep this manifold as close to a stock replacement as possible.  Installation for the most part is bolt on but some modifications to your IC piping will be required.  This manifold will NOT work with the stock top mount intercooler, you will need to have a front mount intercooler installed.  For more install tips scroll down.  Professional installation is highly recommended!



  • CNC machined from 6061-T6 aircraft quality aluminum
  • CAD designed & tested
  • Modular bolt together design for cost effective upgrades
  • O-ring’d head flange eliminates the need for a gasket
  • Several different finished and throttle body flange options available
  • 5 port vacuum plate
  • Limited Lifetime Warranty
  • Made in the USA


What’s Included:

  • Billet intake manifold
  • New mounting hardware
  • Silicone Orings
  • Vacuum fittings
  • 3′ of brake hose
  • 12″ throttle body extension wire harness
  • Fuel pressue sensor relocation kit



  • Mazdaspeed 3/6
Weight 10 lbs
Dimensions 24 × 22 × 18 in
Throttle Body Flange

Stock, Stock w/75mm bore

OEM MAP Sensor Mount


1/8" NPT Methanol Ports