Installed a Selin Dual MAF and a new CAS over the weekend. When I started the car I noticed a slight knock at idle which goes away over 2500RPMS. Checked for leaks before the Selin install - slight EGR leak but that one has been there. Marked the position on the CAS. Z runs really smooth with no hesiation besides the slight knock. Ran fine before the install. Thanks.
Follow Ups
Selin and new CAS...Knocking - HK'S Z12:38:39 06/21/12