Hi cuvner,I had the exact same problem as your good self,only it happened at trackdays.Basically the car would die when out on track,BUT would always restart after the towtruck got us back to the pits!! And guess what the problem turned out to be?????????Yep,the coil!!!! If I was you I'd go to the local scrappies and get a coil,any one will do,£5 max cost,and stick it in.Hope this helps you,regards Micky