I am a high schooler that was lucky enough to get a 2000 chevy cavalier 2.2l automatic 4 door sedan for $100 for my 16th birthday. One of the parents owns a drag strip/race track that we can use, so we are NOT doing this stuff on the road. Sometimes after school we like to race for fun. I already know that a cavalier is not the ideal car. We are careful about it, so we don't need a safety warning. The car is completely unmodded and I was wondering what I could do for fairly cheap to make it more show off (from a high schooler's perspective such as faster acceleration, louder engine, higher top speed, etc.) Sadly there is hardly any room under the hood for extra stuff. I am fairly good with electronics and I have a way to interface my arduino to the obd2 port so if I can do anything there please suggest it (I don't have access to a reprogrammer, but I can send commands over the obd2 port, but I am not very familiar with obd2.) So in conclusion what can I do for fairly cheap to make it more show off (from a high schooler's perspective such as faster acceleration, louder engine, higher top speed, etc.) If this is the wrong place to ask this question, can you please suggest where to ask it. Any ideas are welcome. This does still have to work as an every day car.
P.S. The engine doesn't have any problems and it is at ~168,000 mi.