High density charged boosting for commercial vehicles at higher load is utmost requirement. Turbocharger is such charge booster for automotive engines. Proper selection of turbocharger can avoid disadvantages of surge, choke in the charge flow to engine. apart from many methods this research preferred the On-Road test type matching for evaluation. The initial matching performance carried by the simulation. The validation of simulated solution for turbo matching performance is through Data-Logger method. The objective this research is to evaluate the appropriateness of turbo matching of A58N70 and A58N75 turbocharger for the TATA 497 TCIC -BS III engine for suggesting best one. The compressor map is used comparing solution by methods. In the data logger method the road conditions like rough, highway, city drive, slope up and slope down were considered for vehicle operations.