Audi S4 70mm throttle body upgrade

Here are pics of my S4 throttle upgrade:

http://s537.beta.pho...m throttle body

Bought

TB 70mm from IE together with

70mm adapter.

I boreed out my small and large port intake from 60 to 70mm to allow maximum flow throeuigh it.

On the car for the moment small port head with transition adapter prior to definite upgrade to ported intake and ported adapte.

Than will measure on the dyno difference between small and large port (using 034 phenolic transition spacer) to see if there is any difference.

Up to 400hp small port should flow better and faster.