Thanks for all the good info on this thread. I am really looking to keep the modding budget at max $2K given this car is serving winter duty (5-6 months).
Some refinement to the list with approx prices -
Short Ram Intake - 100
Headers - 250
Overkill Tune - 400
Pulley upgrade - 150
Backyard SC porting - 150 (gaskets and grinding bit)
Plugs -50
Wires - 80
T stat 180 - 10
Xp Hot Cam - 400
Total about $1,590
Do I need injectors? TB upgrade?
I want to keep stock gearing as I commute in this car and keeping the RPM's lower on the highway will keep gas mileage decent.
Oh yeah gotta try and take my buddies 03 540i 6spd out

he traps around 104MPH