This is a homemade modification, not something I bought. I need to know what it did so maybe I can improve it or at least find out what I did and how it affected the HP/Torque.
It "feels" like more than a 122 ft lb increase in torque, and wayyyy more than a 66 HP increase, but I won't know until I get it on the track and do an overall, 0-100 mph calculation of ET.
Your right though, it does put me in my seat alright. A LOT more than it did.