Lost on 08 700 Dragon

[Tsouthern]

So..... I have been out a few times this season and like last, the sled was running great!! Went out again today and it all went down hill fast Started fine in the morning, loaded on truck fine, got to riding area, started rough then went smooth, rode maybe 4 miles and it just died! I'm getting sparking, fuel going through the filter, checked fuel pump and works fine. I'm thinking maybe ECU went out?? Anybody know a way to test that? Any suggestions or info would be great! Oh, sled is pretty much stock when it comes to the electrical and fueling side. Thanks for any help.

 

[Tsouthern]

was thinking more and thought could it be the DET sensor causing it not to want to run? I do have my Exhaust valves plugged off but never had a problem from that before. Has compression still, just won't run. I don't know where to go next?????