Upgrading of car

SG_Jimmy SG

I using a evo7 every 15k pts my car will auto upgrade, and i cant see the diff, do u guy know what it upgraded ?
and from time to time, part chage will show ... and how do i know the part is good ? as it alway show me a repeat of sport rim, pipe, front cover and body kit wing.

Impreza WRX SG

This 15k upgrade is your car tunes. Basically it's supposed to enhance your car. All cars will have this. The only difference is the course tune when your car has 0 - 120k points. A previous post did list out what the tunes are. I think it's one of the very early ones, so good luck looking for it.

The part change is the game's recommendation for improving your performance. The game bases this on the race you just finished. It may not be accurate since you may be just having a lousy day. As for whether the part is effective, I think it should be although you'll need to know what it does.

kohanson SG

The first 120k points is the default upgrades for your car, which depends on which tune you have chosen when you first bought your car. Usually carbon parts are good, carbon parts are in dark grey colour, which looks like black.

As for the parts change, the price is listed below:
Parts Change
5,000 : Exhaust Pipe
10,000: Side Mirror
40,000: Bonnet
60,000: Spoiler

griphon SG

and 15000 for a set of wheels too