Euro - Headers or Pulleys?

[curik]

Header.

Pros: POWA in all rpm.
Cons: makes you wanna put the pedal down, hissing sound (for DC & DC copy & Maxims)

Pulleys.

Pros : POWA in all rpm range, better fuel consumption.
Cons : Same as header. Cannot use amps or subs unless if you upgrade the battery.

For a starter, I'd recommend the header. You will gain more when you get the complete setup (Intake and Exhaust). For the hissing sound, there is a thread about it.