I bought a 2nd hand HKS SSQ recently as I decided to change from the TCC BOV I have on our Red RC. Yesterday took off the TCC & put on the ssq & went for a drive & got no noise at all

Previously the TCC would make noise if changing gear over 3500rpm but the HKS is quiet.

Any Chch members who have had experience with HKS's who may be able to help??