It seems that the most consistent guys at the track have these. After putting myself out several times due to missed or inconsistent shifts I bought one and installed it on the Regal along with the RPM switch adjustable pill and a relay. It looks like its going to work pretty good. Running at Gainesville Sat so we'll see what happens. http://www.jegs.com/i/Shifnoid/254/SN-5055B/10002/-1?parentProductId=745779 Anyone else run one of these?