Originally Posted by pokeyl

New valve is on, BUT, still missing boost. As soon as the traction fluid is warm the boost goes away.

If I WOT as soon as the oil temp is 160 I get 3 PSI at 3K

15 minutes later I get ZERO boost at 3K

outside temp is 75F

I looks like I may need a new supercharger. I have found other rotrex failures over at the BMW sight.

A lot of talk about overspeeding the SC causing the problem, and the user I bought mine from had the smallest pulley GMT makes on it with the stage 1 intake. He may have fried the unit and then sold it to me. As I did my install in the winter, the fluid was cool enough to keep the boost up.

I am working with Sam and Mike to come up with a solution.