[QUOTE=h100vw;1110312]
Quote Originally Posted by Smitroast View Post
Al solved thanks to gavin I was on the right track but it ended up being a coil pack[/QU

Scanned and got Cylinder 1 misfire. swapped coilpack to #4 and cleared code as it had already had some new plugs. Got a miss in #4 as soon as it made any boost. Even at idle the misfire counter was like a stopwatch.

Gavin
Great work. Always good to have a scanner to see where the actual fault lies, as opposed to replacing parts like they are going out of fashion...