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How the hell can a solenoid cost over £2k?!
The solenoid unit is around £500, because Porsche are annoying, you then have to take off the right hand exhaust manifold, lock the cams, take off the cam cover (which has the upper cam guides in it's inner surface), remove the cams, remove the old VarioCam unit, fit the new one, refit the cams, time that bank up, refit the cam cover, refit the exhaust manifold, check to see if that all worked.
In todays "you win some, you lose some".
Win - I thought something was loose/was borked in the C55 as I could hear a knocking noise from the passenger side at certain engine loads. Turned out to be the seat belt had been turned around and the tongue of the buckle was knocking on the B pillar trim. Turned it round, no more noise. Hurrah!
Lose - bank two VarioCam solenoid is borked on the 911, £2,200 to you sir. Arse. Still, explains where my torque had gone.