Hi I've recently came across a problem started randomly one evening when i started my car, Not sure if it being parked half on a curb so it was slanted made it happen but it seems to have started after that not sure if thats would make it happen, This is how it goes.. Start the car, Starts fine idles at 1k revs sits there fine, Sometimes it all of a sudden starts to idle really low doesn't cut out just idles low and sounds rough as, when accelerator pushed down it goes back to normal sometimes other times it just stays rough, when you try and drive the car in gear it hesitates and jumps quite a bit chucking you forward and doesn't seem to have the power Turbo doesn't kick in till around 4k revs and isn't really doing much in terms of spooling, Ive recently had a new athena Head gasket 1.2mm put on New oil, filter and cam belt so dont think its anything to do with that as it was running fine just seems to have happened since the other day and dont want to drive it being such a temperamental car at the moment, Any help would be good Don't think its the leads as when you unplug them from the spark plugs they are still sparking. Cheers