Hmmm what should a V6 tick over at ???, the Beast has always had a very random tickover, anywhere between 800 and 1200, and hunting up and down between the 2 all the time... since putting new plugs in not long ago i get a pretty steady 1200 rpm tickover and much less cutting out, the car is greatly improved to be honest.
When cold its still an absolute ***** for the first mile, but when Jamie porter did the remap, the only way they could get it to tickover was to make it run very rich at idle... not flipping rich enough for me to be honest... and they reckon it had very high lift cams in, which wont help either... carnt wait till they wear out..££££
I'm with Speedy, the idle actuator is on the rear bank near the far left spark plug...had to remove mine to get at the plug. Perhaps you've disturbed something...must have if it was ok before the new plugs
When your looking from the front of the car its the furthest right on the rear bank ..................and when your sat in the car its the furthest left
The Idle Actuator is approx 4-5 inches long and 2 inches round silver in colour and with a wiring plug on one end and 1 or 2 breather pipes on it
Easiest thing to do is to take it off and clean it out with Carb Cleaner and check the little round air flap thingy inside is free Sorry cant be more clear on me description but once its off you`ll probably understand