hi i was just wanting to know some things i could do to me Eb series 2 fairmont performancce wise. it already has 2 1/2 exhaust with pacemaker extractors K&N Intake, stage one shift kit, but apart from that it is stock as a rock, i am an apprentice, so money is far and few,i do know a lil bit about cars and performance upgrades but not a great deal, so nothing big like supercharge or nothing, but what mid priced upgrads can i do to get some more performance? alos i have been looking at a be xr6 computer for it, would this make much of a difference?