dual stage boost controller? HKS EVC 4
 

So Im gonna start installing my turbo stuff here pretty quick and was wondering anyone has the hls evc 4 or not. i was reading that the thing has a button to scramble boost for 40 seconds to allow a higher boost than preset in tuning. My question does it seam like 40 seconds is too slow or not enough time for this extra shot. Do you ever really use it? Anyone have anything better or insight? thanks Mike