What can I do to make my car faster?

I just bought an 09 honda civic si. It has vtech and a fujita cold air intake. Long story short, it needs to be faster. What can I do to it to make it faster but not have major mechanical problems later on

Should I buy 2009 Yaris hatchback or 2008 Civic sedan? - 1

Can someone tell me which one is a better choice - these are the options from private listings:
1. 2009 Toyota Yaris 3 door hatchback, 31K mileage - price obo $9500
2. 2008 Honda Civic sedan, 71K mileage - price obo $10500

Both cars are garage kept and in good conditions. Nothing special about their additional options - both of them are basically base models. The prices are within the range of KBB and NADA.
My budget is to spend max $10K.

I'm a student who mostly needs to go from point A to B (my apartment is close to campus) but I might want to travel around states during holidays. Gas saver and low maintenance costs are my top priorities. Size is not my priority because I just need the car for myself.

This is going to be my first car and I just recently learn driving. Any suggestions?

2007 Honda Civic SI Sedan with 116,812 miles alot?

Parents said i can get a new car but i have to keep under their budget of $14,000. Found a cool looking 2007 Honda Civic SI sedan (never liked the coupes) with around 116K miles. Is that alot of miles for that year? They're asking around 13k for it but they said price is negotiable. What would a good price be? Were there any problems with that year, and do you think thats a good year car for college? It looks really nice and has custom rims, and the interior is really clean too, I just want to make sure i don't but a bad car lol.

New car: vw golf mk1 gti or Honda civic ek9?

Ok so I'm thinking about buying a new car and I can't choose between these 2. I'm a sporty driver. I like my car to be fun and reliable and fast. It's a really hard choice. Any other suggestions are welcome

I think my rotors are broken, how much to fix them?

I have a 2003 Honda Civic. When I break sometimes the car moves back and forth and the steering wheel moves back and forth when I'm driving. I'm pretty sure it's the rotors but not 100% sure. Anyone know what it could be and if it is the rotors how much it could cost?