MY 2009 TRX 700xx is not running well… wont stay at idle, giving it gas just kills it. Runs for a minute or 2 then dies

Heres all the mods it has…
FMF powerbomb exhaust header
after market muffler
Power Commander V
Intake Pre filter
K&N Air Filter

Any ideas where to start? Fuel filter, timing …
maybe just needs to be tuned up because of the FMF power bomb i added?