I have tried tuning it from the factory settings and yes...it does fly.....but not for long!!!!

I have the idle set so it stays running nice??? I presume this is right?? It does not cut out while braking. Just at random times. Sometime it is when it is WOT and sometimes when I am just going slow. Where would be the most possible pace to have an air leak and how do I check for it??

Cheers

Adam