Listen here buddy, It's far from a piece of crap and it's way better than a raspy sounding random tech or carsound cat that you will pay big money for. This thing makes no rattles whatsoever and sounds deep and powerful. I to this day have never thrown a cel. Run a switch to the memory wire in the ecu , flip it to the off position and WOW what do ya know you've done the obd2 workaround. It totally will not throw a cel.