As above guys cars just starting having this problem. Amongst other boost issues.
When starting from cold it's starts then cuts out and when you get it started its lumpy and coughs and spluttrs almost as if its running on 3 cylinders and you need to keep your foot on the go pedal for a couple of seconds after that its ok.
It's starts fine after the initial start up and runs fine apart from my boost issue I'm having but have had that for a few weeks now. But this is new just noticed it yesterday when i went to start it.
Anyone any suggestions as this car is starting to try my patients now.
Thanks steven

 

pretty sure ive just found it there.
There was an earth strap snapped.The one that goes from the off side turret to the engine lifting eye.
Put a new eyelet crimp on and started fine so fingers crossed

 

Quite a few of them splutter a bit for the first second or so on cold start.. Mine does every now and then when it's very cold out.