Well I recently added my EZ to my TST(w/twins) and Triple Dog stack. So far the results are very good. The EZ brings the low end back. Lites the SPS66 so much quicker, even just normal daily driving. I can not believe how much better it feels with the EZ on level 1. TST 7/7, BDDL Performance program and EZ level 2 is the best combo I have found so far for the track. I really dont like a triple stack, but I also can not ignore the results. Added about 25rwhp and removed a tenth at the track.