Originally Posted by
Chris Peralta
I agree with Maximo that it sounds like it's not broken in. Do you have any headshims? You can try adding a .1mm shim and running a #5 plug to help keep it running.. Also make sure when your running it out on the track your getting it up to 200 degrees. If your running super rich and only getting up to 150 or 160 then thats another reason it is dying as it's getting stuck. Try to heat it up over 180 each time you start it.
I agree with you Chris, if you are racing at night time, the later it gets, night time temps get cooler, and usually there is more moister in the air, which will make engines tune change big time, and run cooler, as Chris said, keep your engine temps up to at least 200 degrees.