With great Junkman power comes great responsibility. Don't bore yourself. Try the parts on a silly car first—like the school bus yellow Cobalt SS. Then, go challenge the police. They don't stand a chance.
allow you to modify your career file to unlock these parts without grinding. Locate Save File: Usually found in Documents\NFS Most Wanted Open Save Editor: saveEditor.exe and load your specific profile. Apply Junkman Upgrades: Most editors have a "Performance" or "Unlock" tab. Unlock All: nfsmw save editor junkman top
A save editor allows you to bypass the one-time-use restriction in career mode, where normally only one car can be nearly "fully Junkman-ed". The Complete List of Junkman Parts as earned in Career With great Junkman power comes great responsibility