[Pushit2.0]

Does the knock go away at all, or is it just 40some whenever you are on the gas? what kind of timing do you have, does the car feel fast? My guess is the computer is seeing to much air flow, try taking 5-10% off the afc, see what happens. But it does no seem right to have knock down there, you should not have full boost down that low. Check the knock sensor, ither loose or dead. My car right at 6500rpm goes from no knock to 35ish, but still has 10deg of timing and made good power so I dont worry about it.

~John