Ok I'm a complete novice at this so a few questions:
1. What chip would you recommend?
2. How easy is it to fit (Can you talk me through it)
3. Does it invalidate the Vauxhall warranty?
4. Do you have to make any other mods to cope with the extra power?
5. Can it be easily removed when selling the car on?
6. What sort of cost are they?
7. What effect does the mod have on the "Sport" button?
Any other advice?