I have a Smarty stacked with a Edge Comp and it works great. I use the Smarty on level 8 solo for towing. The Smarty really works great the tapped fuel pump. My Smarty in level 8 made more power than my stock clutch could handle. A South Bend clutch later I'm pulling 18,000 lbs up some steep inclines without any problems. The torque from the Smarty put my past Edge EZ to shame and made less smoke doing it.