Ok, normally when i first start up, set off and let ma engine and transmition oil warm up i have no problems when it comes to power. I get to the motorway and going about 70-80 mph, you get that annoying astra driver up your *** and i decide to leave him in my dust so i put my foot down, it normally drops down to 3rd gear and revs increase to 4500 rpm (foot still flat).....but i accelerate so slow its rediculous, i know somthing isnt right, i was reading some other threads, might be the waterpump to sc? Or a fuse? Not too sure tbh, but thats where you awesome people come in haha.