Can someone please help? I have a Ba MKII turbo ute Auto - still stock (still in ford extended warranty) and recently I have been experiencing a kind of surging. I have taken the car to the dealer to be told nothing wrong and no codes logged, drove out the driveway and it did it straight away. I turned around and they tested??? it straight away and told me that the battery level (voltage) was too low. I have replaced the battery with a very high quality one, which I thought solved it..... weeks later same thing again. I my words this is what I am experiencing.. From standing (or rolling off from lights) If I accelerate hard the car performs well the gearbox chages into 2 the revs are abound 3k and the turbo and car starts to kinda surge, won't accelerate loses power. to restore power and to normal performance have to slow right down otherwise it runs like a 2 stroke motorcross bike with a fouled plug. It seems that the turbo hesitates or is stalling at around 3000rpm under harder acceleration, in all gears and modes bar 1st - it seems fine Anyone who could help or point me in the right direction, will be appreciated.