i have a 08 14 has m4 slip-ons k&n filter and factory pro velocity stacks (mids) and pc3 with m4 stock or aftermarket map. bike is new (3 mo. old) 1500 miles. problem is now all of a sudden when bike get warm it runs and sounds like a v twin and stalls out when downshifting at idle it runs at 1000rpm 500 rpm lower than its suppossed too. i can start up bike when cold it runs until it gets warm then just dies but starts right back up. bike has run fine with the mods until just last week. anyone out there have any ideas or suggestions or does it sound like a warranty issue? thanks all