Maybe I'd be wrong, but I believe tuning karwane se kuch khaas fark nahi padta bike ko, Lubrication hi karni hoti hai unho ne ya drive chain tight karni hoti hai, wo khud kar lay banda.....Four Stroke bike ko to i think just filter saaf karne ki zarurat hoti hai.....humne bike city me hi chalani hoti hai, just 10 km/day wo b shokiya, verna nahi, so id on't think so tuning is that much necessary
When u buy a new bike its screws, nuts and bolts etc are not thight.. theyr all loose, overall every setting of ur bike is soft/loose like brakes, clutch, chain etc.
At ur first tunning thry will tighten up these all things, ask them to thight every screw/ nut/ bolt of ur Handle assembly, screw up the HUB/ Axles etc. Bcoz by factory the screws etc arent thightened up enough its allways bttr to get them checkd.
Also first tunning would increase ur bikes avg.