Talk:RR3 Wiki:Upgrades Strategy For 100% Completion/@comment-190.139.16.70-20170220020027

what does -1 or +2 means¿. for ejample bmw m1 coupe sais  -1 Engine & Drivetrain, does that mean fully upgrade exept the last points of engine and drivetrain'??

if it says +5 what does it mean? can I complete the game whithout paying for gold, or theres no way to get that much gold?