Up until two weeks ago, my system was fine. Then without warning, I started to observe some knock on the top end. So I went back and checked my timing and fuel system. I noticed that each time that I got any amount of boost, the
Progressive Controller would go straight to maximum flow instantly no matter what settings were on the
Progressive Controller. And each time that I turned on the ignition, it would run for a second or two. I do not know what is happening. But the signal from the MAP is where it should be. Is my
Progressive Controller failing? Or should I look for a problem elsewhere?