I ran one of those Benz silent exhaust silencers and heard it was not restrictive. I had it on for about 2 weeks and man it was quiet I could actually ride at night and people wouldnt complain. The problem was I lost a lot of power and didnt even think of all the back pressure on the exhaust. Well after that 2 weeks I guess the back pressure took its toll on the ecm because of the sensors. So needless to say my Benz costed me about $600.00. I dont know for sure if that is what caused this but I have about 2,000 miles on my king with no problems. I was riding my quad for about 30 minutes or so and left it running for like 2 minutes in neutral and it just died. Tried to start but wouldn,t so I had to buy the new ecm. Has anyone else ran a Benz on their kings without problems?