I have recently installed a greddy kit on my d15b. For some reason, I am getting absolutley no boost, and when ever i press the gas wether its liaght or heavy throttle, I hear a loud rattling noise coming from the turbo. Im assuming that the turbo must be bad, all the seals seem to be ok, as there is no apparent leaking, but at the same time the loud rattling and the lack of boost is driving me nuts. any help is appreciated.

tia,
chazz

 

Check for shaft play and if the blades are hitting the housings.