Turner-Porsche 3.5″ HFM For E36 M3 (OBD-II)

Product Details

This 3.5″ HFM is used in our OBD-II Performance Packages on the 1996-1999 E36 M3 (and MZ3 S52). This is a Plug & Play and seamless kit built using a Porsche HFM, custom wiring harness adapter, and harness mounting bracket. This HFM is preferred because it has a greater resolution and reads larger quantities of air more precisely than the 540 or Euro M3 HFMs. We have put together this kit to be completely reversible and plug and play using factory plugs and connectors. It requires no splicing or modification of your stock connector harness, avoidng the pitfalls that can come from exposing your factory wiring. Using this without the harness will require you to bridge the grounds of the factory harness together in order for the HFM to send the correct signals to the computer.

The correct software, and related intake components, are required to use this larger HFM! See below for software options from Turner Motorsport. Or click here for our complete list of E36 Performance Packages.

Software Options
Stage 2 – 3.5″ HFM, “24lb” injectors
Stage 3 – 3.5″ HFM, “24lb” injectors, Schrick camshafts
Stage 3+ – 3.5″ HFM, “24lb” injectors, Schrick camshafts, M50 manifold
Stage 4 – 3.5″ HFM, “24lb” injectors, Schrick camshafts, headers
Stage 4+ – 3.5″ HFM, “24lb” injectors, Schrick camshafts, headers, M50 manifold
Stage 5 – 3.5″ HFM, “24lb” injectors, Schrick camshafts, headers, cat-delete

This 3.5″ HFM is intended for the following BMWs:
1996-1999 E36 BMW M3
1997-2000 Z3 BMW M Roadster M Coupe

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.