I recently acquired a 2000 HD Softail Springer. It has a 105 ci Screaming Eagle engine and Screaming Eagle cone air filter. The information I have is that it has a Dana Tech electronic ignition and was Dyno tuned previously. Since it back fired on me and almost died while doing 70 mph, I am concerned that all is not well. My question, what is a Dana Tech? Is that another tuner? Do i have to do another Dyno tune? Would that be caller for now that I have gone back to Super Quiet baffles in my Vance & Hines duals?