The V8 Owners Forum -

Posted: **Tue Nov 23, 2010 10:07 pm**

My engine has dropped a liner and I'm going to build a 4.6 to go in it.The engine has the Bosch Motronic system that has air injection.I would like to fit a nice pair of 28cc chamber ported heads I have.Does anyone know if you can remove the air injection or will bugger up the ecu.

Posted: **Wed Nov 24, 2010 8:00 am**

To clarify, your car has Secondary Air Injection (which presumably means the heads are different??)

Chris.

Posted: **Wed Nov 24, 2010 6:23 pm**

Thats the one ,they have extra boss's cast into the heads,I have an early Disco 2 engine,it has the boss's but there not machined,just blanks.

The V8 Owners Forum -

Late Disco 2 4.0 air injection engine Bosch Motronic

Late Disco 2 4.0 air injection engine Bosch Motronic