depends what what kind of 'racer' you want to be but in general start with a 2 door standard that is fairly light then once you get it..if its just straight for racing but still on road..then gut the interior..back seats front..a bucket seat in the drivers side will help alot...after you gut it.look into the motor..it most likely has a small 4 or 6 cylinder ...first thing i would do would be an updated computer..perfomance chip of some kind..but not till after a head upgrade ...cam ..valves whatever..performance clutch would follow that...depends how fast you want to make it..if you have the cash you could probably just upgrade the motor to some high compression 6 banger...stiffen up the ride with some sway bars and anti roll bars..you can even weld a roll cage to the frame which would stiffen up the ride and help in cornering....suspension would be next which the main objective would be to lower and stiffen your ride.this would help with launches and cornering..now if you are looking to drag then you want fat rubber in the front..if the car is front wheel drive..but if you are looking for cornering then all 4 should be wide and performance tire....his is a huge thing and it all depends on what you are looking for and how much money..im out of time
...In addition, a short throw shifter is essential, especially if you're drag racing. Upgrading the tires is important, but it should be one of the last things you do. The things that give your car the most additional speed, bhp, handling, etc. should be saved for last because you're going to have to be a better driver to be able to handle them properly without killing yourself. So back to simple stuff. Exhaust is a pretty simple upgrade that can be done yourself [along with gutting the car, (sometimes) adding a performance chip, adding a cold air intake and intercooler.] All of this should be done if you're looking to make a track car. But, since you said 'street racer,' I'm assuming you have some friends who get together at car meets, hoon and have a fun time. If you're there just for fun and are going to be hooking up your daily driver, you can exclude the more radical modifications such as stripping the interior and getting a roll cage. If you're doing the work yourself, you'll need to be able to check on the engine with dyno tests throughout the tuning process. If you have a buddy who's good with cars and is doing a lot of the work pro bono, thank him a lot because the labor really adds up if you go to a garage. Like Evan said, it's all really about how much you can spend and what exactly you want out of the car. If you are street racing, a radar/laser detector is an important investment. I got a $300 speeding ticket. Then I bought a Valentine One. Since then, (about 2 years ago) I haven't gotten another ticket. Also, I recommend going out on some track days or autocrossing. It's fun, sometimes cheap, and sure, it lacks the whole dangerous and illegal outlaw driver feel, but it IS safer. Driving fast on public roads really requires a ridiculous amount of skill to do it as safely as possible. So yea, I'm out of time, too. Have fun, be safe, and good luck.
you will only need 2 things > horsepower/torque and when that cost starts to add up then you will have to lighten it up.every 100 lbs saved is worth 1/10 second and it will turn better also.