What parts can I add to a 2013 Honda civic si to increase speed and horsepower?

What parts can I add to a 2013 Honda civic si to increase speed and horsepower?

High octane gas, intake kit, perofrmance Intake maifold, ported and polished head, stage 1 cams, header, performance exaust, all Royal Purple synthetic fluids, platinum 4 sparkplugsl, performance clutch, and aluminum flywheel. After all that have it dyno tuned and you'll probibly make about 250-280hp. Then take it to a track and learn how to drive it fast. (these are the simplest and cheapest ways of getting relyable HP without exsesivly shortening the life of the car or putting more money into it then it costed)

A turbo and headers, plus new pistons and cams, maybe even a stronger crank.

And to void the warranty.

NOS sticker
racing wing
hood with a carbon fiber decal covering it

all add at least 136 HP. Best bang for the buck
You'll blow the doors off of the 1st American V8 that you see. They'll run scared…

I forgot to add a Type R badge… Will shave 0.5 seconds off your 1/4 mile.

Why? Why did you buy a Honda Civic SI (capitalized, Please) if you needed "speed and horsepower?" If 201 horsepower is not enough, what could be enough? It is cheaper to buy a car with more horses than to modify, change, etc. An existing one. Ever hear of a Mustang GT? How about an Audi with 300 horses? Todd, I advise you to sell this car and buy a different one.