Hi, i bought two S4 TII rotor housings from a guy to use in my S5 TII motor. Has anyone successively ran S4 TII housings on a S5 turbo motor? If so what else do i need to change to make it work? I'm going to be running a redom ECU with a fuel controller. Any help would be great. Thanks

Daniel

 

Should be fine but be aware the spark plugs are in a slightly different location and since the emissions passages don't line up, you won't be passing emissions.

 

Ok, smogs not a problem. But i was told that i have to run the S4 pulley that has the timing marks on it because of the slight timing difference.

 

If all you are swapping is rotor housings, then leave the pulley alone. Use the pulley and hub combination that came with the car.