Info on a cam.

[Ed Doe]

Youll need to allow around 400quid fir decent mapping, and iirc the cam will cost around 300; hence for the money you're way better off putting a bigger engine in...

In regard to differences in power delivery and performance; you'll be able torev t her, you will lose some lowend torque but you will gain power higher in the rev band. It will increase torque too but youll have to rev it more to acess it.
In summary, with the price gti's can be had for these days, youd be mad to spend the money on a 1.4...