T5 running problems

please help!!! i’ve just got a T5 mark1. it starts ok and is fine on tickover. problem starts when i rev, the engine starts to die then cuts out. ive changed the exhaust and it still does it.[:’(]

TRY CHANGIN YOUR PLUG 1stIF IT AINT THAT YOUR MAIN JET COULD BE 2 BIG CLEAN YOUR CARB OUT AND YOUR FILTER I8F IT JUST DIES ITS FUEL BUT IF IT BANGS AND POPS CHECK YOUR TIMIN HOPE IVE HELPED CHEERS