Shooting Flames!
yes usually a flame indicates a rich mixture but also it could be that the exhaust is so hot right at the cut out u are igniting the exhaust fumes... the mixture might be just right for that... if it doesnt do it with the cutouts closed Im confedent ur just getting the right mixture of Fuel/Air/Heat(from the exhaust) to ignite the fumes...
But on that note I would recommend checking it out with auto tap to read the O2's on the floor, just to see what is going on.
Ryan K.





