JasonKozofsky
New Member
My gtx was running good but recently it hasn't been going past 4k RPM. I also notice a whistle noise when I give it full throttle. I cleaned the RAVE valves and it didn't seem to help. I also noticed there is now a big buildup of black where the exhaust manifold connects. I attached a video and picture https://youtu.be/vdrZiueNoek