Now How to Boost Your Car's Horsepower
Way Upgrade to a free-flow aftermarket air filter
- Buy a free-flow air filter that fits your car.
- Open hood. Locate the air filter housing. (Look for the long pipe-like thing connecting the engine to a square, plastic box.)
- Remove housing. Unscrew clamps or screws and open filter housing. Make sure not to let any contaminants into the filter housing (dust/dirt).
- Remove filter. Discard the old air filter (Note: remember how it is fitted).
- Clean the inside of the box with a damp cloth.
- Insert new, free-flow filter.
- Close housing box and drop hood.
- Enhance your engine's computer with a power module.
- Disconnect negative battery cable.
- Locate the car's computer. Look in the driver's manual, a Chilton or a Haynes guide to see how to access the car's computer.
- Unplug wiring harness from computer.
- Plug in an after-market power module. Insert it between the wiring harness and the computer.
- Reconnect negative battery cable.
- Follow the module's instructions for starting car.
- Fill 'er up with gas and race with up to 30 extra ponies.
- Enhance your car's computer with a programmer.
- These devices modify the programming on your vehicle's computer, allowing more horsepower, torque, and sometimes better fuel economy.
- Once you purchase a programmer for your vehicle, read the instruction manual to install it. Programmers differ on how they install and work, so reading the manual is the only safe option.
- Upgrade to a free flowing exhaust
- First, find out the exhaust piping diameter of your exhaust. Do not just measure the diameter of your exhaust tip. Measure the pipe that comes out of your catalytic converter, as its usually the smallest.
- Search online or in a store for a performance exhaust system for your car. Search also for videos or sound clips of different exhaust systems as some of them may make your car sound unappealing to you.
- You'll want to find a "cat back" system. These systems run from your catalytic converter to the end of the exhaust piping.
- Almost always you'll want to get a system that is 1/4 to 1/2 inches LARGER than the one your car came with from the factory. Some people can go larger, but it requires serious modification to the engine. Making the exhaust TOO free flowing can have a negative impact on low end torque, so you'll probably want 1/4 inch for a 4 cylinder, 3/8 for a six and 1/2 for a v8.
- Once you have the system, you can either cut the old one out yourself, or have a shop do it.
- If you cut the old one out, cut it just after the catalytic converter and leave an inch or two to clamp or weld onto. Detach the rest of the exhaust system from the hangars.
- Position the new system in place (assuming you've assembled it) and weld or clamp it to the spot you just cut. Reinstall the hangers that you removed.
- Start the car and feel a good 10-15 hp increase. m
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