Had my car on the track on sunday, lots of fun, but about four/five laps in every time the car would bog down splutter and not come on boost until cooled down. which stopped me from having any full sesions. Each time it happens i let it cool down then do next session. This happened to me before so i changed to after market coils and better spark plugs but obviously not the problem. Never noticed this on the street just on track when really pushing it. Did a quick net search and it was suggested a faulty AFM could cause this but i think it would be more obvious all the time. Is it possible the AFM could overheat. any thoughts would be great cheers.