I've just taken delivery of a 55 plate R53 with the following upgrade:
Gp intercooler
16% reducer pulley(with sticky belt?)
And hybrid Cold air intake
Works plugs
It's going down to the dyno next week but was just wondering what power I should aim to achieve?
Any help would be great!

It should make 210-220ish

similar sort of question guys, iv got a 2003 cooper s with a pipercross panel filter and a jcw exhaust, thinking of putting a smaller pulley (15%) onit. What bhp do you think il have then? Cheers

Maybe about 200bhp - JCW exhaust will have only a small impact on power output...

thanks. Im abit worried about putting a pulley onit incase it causes any damage? but i have seen that nearly everyone has them soo...

We've done 100s without any issues, so go for it

I think i will, cheers paul :).