I'm currently looking into upgrading my 2002 Audi S4 2.7 Bi Turbo Quattro to a ko4 fuel kit yet just undecided which way to go. I got a local shop remommending "Autospeed" who does NOT recommend VAST yet everyone else I talk to says VAST. Now I'm not a mechanic nor do I know much about cars other than the basic.

http://www.autospeed.us/store.php?cr...on=show_detail

or

http://vastperformance.com/shop/prod...products_id=36

yet if i get VAST theres 3 options to get hitachi, bosch and RS4 Bosch not sure what one to get

I've already upgraded to ko4 turbos and just undecided in what fuel kit to go with.

I'm not trying to build this as a race car but yet a fast reliable everyday drivable car.... tips and advise plz