I have an '04 GTO that has 38k on the clock and only about 4500 miles on its TVS1900. It felt a little sluggish the other day, and I discovered that the bypass valve was sticky (not closing fully) and therefore losing boost.
When I pulled the blower's snout, the bypass blade and throat looked clean, but wiping them down with throttle body cleaner took care of the stickiness. I'm going to add a catch can to help keep this from reoccurring, but was wondering if there is an oil that would be less prone to gumming that finds its way through the pvc system. The car sits all winter and gets driven about 2.5k miles in the summer. I've been running 5w30M1EP or M1 0w40 and change it yearly.
Thanks for your thoughts.
When I pulled the blower's snout, the bypass blade and throat looked clean, but wiping them down with throttle body cleaner took care of the stickiness. I'm going to add a catch can to help keep this from reoccurring, but was wondering if there is an oil that would be less prone to gumming that finds its way through the pvc system. The car sits all winter and gets driven about 2.5k miles in the summer. I've been running 5w30M1EP or M1 0w40 and change it yearly.
Thanks for your thoughts.