Can you run a td 05 20g on ported std headers or does it need aftermarket.such as hks, gruppe s etc........... cheers.

 

It was the route I was going down mate. The ported oe headers were the preferred choice rather than the more expensive stainless ones.

Changed my plans now but cant see any problem. Have you approached Harvey for any advice?

 

have a set of harveys headers on now on a vf 34 just wondered if they will flow ok at the top end with the 20g