Quote Originally Posted by TypeG View Post
only a header and retune gave you 14kw gain?
that's HUGE

You have to take into account that the headers are complemented with the CAI and zorst to make this figure, if it was just headers alone, the gains will be less with the VAFCii.

With the VAFCii, it has got more potential for gains if there are more modifications to feed the car to start with..

Between the three modifications, a set of decent headers will provide the largest gains.