Here is a system that I just saw at the Carlisle Ford show. It's self tuning and is suppose to get to 99% effiecency all you do is install it start it up and drive around and it dials itself in. It has the injectors in the throttle bodies and looks like a Weber setup. A little pricey but not as bad as some. The company is DynatekRacing
http://commerce.idmi.net/ecommerce/c...=2817&PI=24537