My 08 Challenger 180 SE was running great today until... noticed a loss of speed. I gave it gas and it wouldn't get above 35. RPM's seemed to max at 6800. A few minutes later I got all the power back. It had a burst of speed, then slowed back down. I was hoping something was blocking the grate, jumped in and checked it, but it was clear. I'm thinking its the supercharger slipping. Would that be covered under my extended warranty? Any thoughts?