mate if u want to tune a corsa vxr dont they blow up standard my mate had one and remaped it and it crack a piston and as it was remap he had to pay vauxhall for a new engine and he drove it around but he remaped it again but didnt go for so much power and guess what it blow up again so in the end he took it to regal had a engine rebuild and spent £6000 that was for the engine the inlet to be bored out astra vxr injetors front mount intercooler and some ofter stuff and it was ment to be around 260bhp and after all the 3 weeks later the turbo went so he sold it and got a new shape audi s3 and and he got it from vauxhall new and when he sold the car cost he £28.000 with engines all the parts and all this was done in less than 20.000 miles so if u got a bit more money try and get a astra vxr got a lot better engine sorry if that put u off but dont get me wrong they look so good but it just the engine that lets them down