I have since checked and the compression. (140 cold) I then removed the power core 2 silencer and verified that it is not plugged. The packing is in fair condition.
I have spent days searching the internet and many hours trying to track down the gremlins. The KIPS seems to raise my eyebrows. With the round inspection cover removed on the left side, I can see the gear actuate as I increase the RPMS. There is one tooth missing from the gear but this doesn't seem to affect operation. With the exhaust removed, I can see the main valve is very dirt hand covered in carbon.
Under the KIPS cover, I see that the valve doesn't close completely when allowed to close under its own pressure. (See photos)
I'm really pulling my hair out in trying to figure this thing out. It seems very flat all through the rpm range. Please let me know if you have any advice.
Brian
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