anyone heard of this before? looks very intersting. helps build boost at idle by bypassing turbo & intake at idle... which means no vacuum pressure. so when you hit the gas, your starting at 0psi, instead of -15psi. any one try this out yet??

http://www.shelbycsx.com/csx321/buildup/dvalve.htm

 

I think 2step is a much cleaner set up.

 

Have you ever watched a boost gauge when you tap the throttle? Its linear with throttle movement. There isnt enough lag to measure without instrumentation.

 

?? 20psi and still 16s. damn... u could probably boost a damn GMC Yukon 20psi and go faster,