well, im still trying to figure out what kind of a wastegate i have and where to buy a new diaphram for it.... so far no luck.... well i just found a pic of it... http://www.gnttype.org/techarea/pictureguides/downpipes/ATRDP2.html thats the exact downpipe and wastegate i have.... if anyone knows where i can buy a diaphram for it p l e a s e let me know... : )