What is the cheapest way to get more horsepower out of your car?

The cheapest way to get more horsepower out of your car is to remove weight. Every 100 pounds you can remove from your car will add about 1 horsepower. This can be done by removing the spare tire, jack, and any other unnecessary items from your trunk. You can also remove the back seats and replace them with lighter racing seats. Another cheap way to add horsepower is to install a cold air intake. This will allow your engine to breathe in more cold air, which will result in more power. You can also install a performance exhaust system, which will help your engine breathe out more exhaust gas, also resulting in more power. Finally, you can install a performance chip, which will reprogram your car's engine computer to produce more power.