Just put my new forged 4.6 together, all finished, in car, and all is well except for a high pitch noise coming from my bypass valve on my p1sc. Around the 1500-2500 rpm range, this high pitch noise pretty much kills your ears. I took it off, inspected it, put it on another way, all with failure. Does anyone know why this valve would be making the noise? It never did before. Only change is that I added an Anderson Power Pipe. The noise seems like its happening under the 'no vaccum' range.
Thanks for ideas.
Also, if I have to get a new one, I need names and prices. Thanks.
Thanks for ideas.
Also, if I have to get a new one, I need names and prices. Thanks.