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A MAD Fabworx original design, created out of passion for engines and performance. The project was developed using professional CAD and CAE software.
The 4-2-1 manifold was engineered to maximize torque in the mid-range – exactly where the MX-5 spends most of its time on the road and when powering out of corners on the track.
The only fully equal-length 4-2-1 manifold on the market – with a runner length difference of less than 1.0 mm.
This manifold is the perfect combination of precision engineering and modern manufacturing methods. Thanks to its equal-length design and optimized pipe diameters, it offers the ideal balance between performance and engine smoothness.
Performance improvement:
Up to 10 PS and 12 Nm without ECU remapping
Up to 15 PS and 20 Nm with ECU remapping
*maximum difference values measured on the engine - may differ upon engine, fuel, dyno setup, etc.
Fits 1.8, 2.0, and 2.5 engines in the Mazda MX-5 NC
Original CAD/CAE project – designed and validated with top-tier engineering software
CNC-bent and TIG-welded pipes – optimized for exhaust flow
Equal-length runners – less than 1.0 mm difference, unique on the market
Pipe diameters:
Primaries: 45 mm
Secondaries: 50 mm
Outlet: 60.3 mm (2.5")
-Header to head gasket
-Donut gasket to midpipe
-Heat wrap for O2 sensor wirinmg
A MAD Fabworx original design, created out of passion for engines and performance. The project was developed using professional CAD and CAE software.
The 4-2-1 manifold was engineered to maximize torque in the mid-range – exactly where the MX-5 spends most of its time on the road and when powering out of corners on the track.
The only fully equal-length 4-2-1 manifold on the market – with a runner length difference of less than 1.0 mm.
This manifold is the perfect combination of precision engineering and modern manufacturing methods. Thanks to its equal-length design and optimized pipe diameters, it offers the ideal balance between performance and engine smoothness.
Performance improvement:
Up to 10 PS and 12 Nm without ECU remapping
Up to 15 PS and 20 Nm with ECU remapping
*maximum difference values measured on the engine - may differ upon engine, fuel, dyno setup, etc.
Fits 1.8, 2.0, and 2.5 engines in the Mazda MX-5 NC
Original CAD/CAE project – designed and validated with top-tier engineering software
CNC-bent and TIG-welded pipes – optimized for exhaust flow
Equal-length runners – less than 1.0 mm difference, unique on the market
Pipe diameters:
Primaries: 45 mm
Secondaries: 50 mm
Outlet: 60.3 mm (2.5")
-Header to head gasket
-Donut gasket to midpipe
-Heat wrap for O2 sensor wirinmg