I have a 1.6 Si and as far as performance is concerned its nothing other than a dissapointment, Its crap acceleration and struggles to get 115 120 out it. YOu really need to fit some nice air induction and filter kit, remove the CAT, and fix a bigger throttle body to it to get it up to even the standards of a 1.4

Big hairy knackers to the Si, its definately a shrimp in wolfs clothing¬!