An adapter that allows the M54B30 intake manifold to be paired with an M52TU electronic throttle body. This manifold offers significantly improved flow due to its larger intake ports. The conversion should result in an additional 10-15 hp and significantly improve engine breathing and top-end response.

Suitable for:

E46 – 323i, 328i;

E39 – 523i, 528i double vanos

Z3 – 2.8 double vanos