[quote name='Chroma914']Man, the MP sure is tough and part bullshit, part luck half the time. Anyone have any tips on doing well in the races? Also, I see that there are car upgrades (some fans thing, extra health bar, and an engine upgrade) for each car - how do you get all of them? I've gotten the first extra health bar, but I'm curious about the others.[/QUOTE]
The car specific upgrades are unlocked by finishing races with that specific car. Fan Upgrade = 10 races, Extra Health = 25 races, and Speed Upgrade = 50 races.
My advice for anyone struggling is to pick up defensive weapons. Think less about trying to hit everyone with powerups and try and take good racing lines. the majority of people in this game are absolutely horrible racers (slamming into wall around every corner, cant drive in a straight line, etc.).