Im thinking of having my car chipped and remapped.
its a 2002 Astra 1.8 SRi
Could people who've had theirs done previously give me an esimated price of what the costs are roughly and also the gain in BHP you get from having it done??
I've noticed the Chipped units are avaliable on Ebay, are these any good or are they just cheap nasty knock-offs