I installed a K&N filter and SLP Flo-rite in the top of the airbox on my '04 Griz, ever since then the reverse light will start blinking if I wick the throttle. I also opened up the stock exhaust. The light will blink until the key is shut off. I've read through the service manual and not found anything about self-diagnostics, which this seems like its doing. Has anybody else experienced this condition, if so what was the fix?