For Track/Race cars with the MP62 supercharger.
This Revision2 4-1 manifold has 4 different diameters in its layout.
45mm, port-matched to the cylinder head to maintain gas-speed - for best torque - stepped up to 48mm for maximum power at the top-end.
No 90deg bends and a 51mm merged 4-1 collector (fully-welded - no leaks/no springs) for enhanced flow characteristics into a 63.5mm final section matching the diameter of the system.
Power increase of +25bhp and torque increase of +18ft/lbs with ECU tuning.
All TIG-welded for quality and integrity - no squirt gun lumps/spatter.
The De-Cat/Test Pipe is best for power and is routed well away from the clam. Flexibility is provided by the well-proven cup/doughnut gasket fitting.
With ever-increasing power outputs approaching 300bhp and over, this design is well able to handle the stresses and increased gas-flow.
This has to be the most popular supercharged 2ZZ-GE 4-1 manifold in the world - demand is relentless!