Having just purchased a P38 2.5 DHSE (Auto) 1998 I intend to fit either a Powerbox or a Superchip. What would you fit and which model and where can I get one?:confused:

I have just bought a P38 2.5 DHSE (1998) Auto. When pulling away from standstill it crawls away for about 5 seconds then jumps into life and away we go. I have manually selected 1st gear on the box but this makes no difference at all. Has anybody come across this problem before? The vehicle has...