Righto, further on from the idling problem which has now been fixed ( a dirty and clogged Idle Control Valve), my AVC-R now doesn't want to control the boost.

Its set up to limit boost to 0.75 bar, with 71% solenoid duty.

However, at about 0.3-0.4 bar, the solenoid is clicking like crazy and as soon as I get to 0.75 bar, it carries on going and stops at the boost limit on the PowerFC (1 bar).

I've checked all connections and they're fine (and correct), and presumably as the solenoid is clicking, then that too must be connected.

Could it be possible that the solenoid is broken? I'm going to test it tomorrow with one borrowed off a friend, but if it is, where would I get a replacement Apexi solenoid from?

Further to above, someone suggested that the wastegate could be jammed. Presumably as I can hear it chattering its not jammed shut? There are no kinks in the lines. I've not managed to test it yet, but are these the symptoms of a dead solenoid?

Sometimes, there can be nothing wrong with anything except for the simple fact that an automatic BC isnt controlling things perfectly. If the problem persists I recommned picking up a Holloman or some other manual BC and see if that solves things.

I've replaced the solenoid and it's still doing it. If I increase the boost on the AVC-R, it appears to be able to control it and vents it via the wastegate, but its having a real problem with 0.75 bar.



It seems strange that i've got a problem though as its been fine until friday when it suddenly started doing it

Did the symptoms come up when it got cold out. I say **** it and pick up an MBC.

do you have a full exhaust? If so you'll find a hell of a time limiting boost.