I've only just found out (I'm a bit slow!!) that my Astra has only got 136bhp. I thought it was the 150 model but now, after closer inspection, I realise I've got the X20 XEV and not the C20.
Mind you she holds her own against my mates french crap, 306 GTi-6
So I want more power, how can I best get it?? Induction kit? Exhaust?