General Upgrade Suggestions - Your opinion

[Dathaeus]

What you guys think about this guy and his e46 upgrade video....
Seems pretty standard stuff...
Feel free to add anything YOU have dont that actually gave you an extra + 5-10 hp...

https://www.youtube.com/watch?v=826NpUf6hQE

1. Air intake (+ 5 hp)
2. Exhaust (+ 5-10 hp)
3. Wheels (w/proper offset)
4. Suspension / Coils (Close fender gap)
5. Brakes (match performance upgrade)

[@nextlvel]

Catless headers + tune probably better for power than most things in this list IMO

[Galapolis]

The cams + exhaust are already good upgrades on the ZHP vs. base model. Anything beyond that I'd basically want to follow what @BerDz3nA (http://www.zhpmafia.com/forums/showthread.php?21379-ZHP-NA-Project-More-Power&p=612385#post612385) did.