hi guys, having some troubles with my auto, when im in second and put my foot down between 2000 and 3000rpm, the car sruggles to pull, chugs( like when you are low on petrol and plant your foot). has anybody had this happen to them? or any ideas on what it might be ie: reflash, fuel pump, fuel filter, auto gone? the car is a ba xr6 non turbo.