Looking to find a grom that's worth the money an condition isn't a issue as long as there's no frame damage

Hey so I have a 19 grom and I want to do the dhmotoring cam combo (tb cam and ecu reflash) but at the moment I only have an exhaust and the air box mod done to The bike, will I need a tuner of some sort along with the reflash or would the reflash be suffice?? And if I need a tuner what’s my best...

I have a Brand New, Never Used, Pre-Programmed Bazzaz z fi fuel control system. All parts there. Retail is $300, mines $250... And I'll throw in shipping once payment is received. I can do PayPal, or if your in OC CA we can meet up. Got it from a friend, don't need it now... I'll send pics for...