Thanks for the replies, all opinions taken onboard. his vr6 was standard internally. it was a couple of months after the rr day he then got schrick 264s fitted. then it got even faster but he never got it back onto the rollers before he sold it my mate said it might be to do with the fact that the pipercross viper is for a clio 182 and might be restricting it slightly. he said that i should sell the viper, buy a bmc that is for a golf vr6 and get her on the rollers again to see if this makes a difference. if this doesn't make a difference then al just put it down to being a weak engine. once t