Quick Header Question..

Which headers are better 4-2-1 or 4-1?

whats the difference performance wise?

Doesnt matter, the difference (if there is one) wont be enough to notice. Get which ever is cheaper.

4-2-1 is better IMO.

First of all are you turbo? Cuz alot of people just stay with the 2g stock manifold Maybe ported a little more but thats about it. Even the big Boys!!

Oh.. Ok..

And no im not turbo..

4-2-1 gets you better low to mid end power. They're usually not emissions legal.

4-1 is better at mid to high end rpm. If you're racing and still keeping the car street-able, stick with a 4-1. I personally have one and it does really well.