Got a bit of a problem i hope somebody could help me with as a lot of searches have turned up nothing got a problem with my VXR.
when i come to want some power seems to come up onto boost but then hesitates and stops then starts again. I've fitted a new set of plugs to it and they were genuine gm plugs ive also sourced another coil pack and have been trying them to remedy the problem but nothing seems to have sorted it also cleaned the map sensor. Should i be looking in other areas ie: is there a boost solenoid like the mk5 as i notice there is a vac solenoid on the top of the engine apart from that i cant see anything untoward.

Hopefully somebody can help