usarwar.. please do not misguide people if u dont know anything about the stuff u r talking about.
efi CARS DO NOT REQUIRE tuning in traditional sense. The only thing u can really do is change the spark plugs and clean throttle body. NOTHING else is needed. If the engine is running well, no engine calibrations should be disturbed. ENgine computer codes SHOULD only be checked by trained technicians.
Under no circumstances take ur car to cng shops and have them fiddle with ur engine. get it done from proper toyota dealer or equally qualified tech staff