- 1). Install a nitrous oxide system. Nitrous oxide systems inject nitrous oxide into the fuel system at the push of a button; this provides a tremendous but temporary boost in horsepower. Nitrous oxide systems are relatively inexpensive considering the amount of horsepower they add, but note that they do increase wear and tear on the vehicle and have the potential to blow the LS1 engine if used improperly.
- 2). Switch from standard oil to full-synthetic oil. This will provide a moderate boost in power, typically about five horsepower, but also has the advantage of being extremely inexpensive and easy to install. It might increase the lifespan of your vehicle.
- 3). Replace the factory exhaust system with a performance aftermarket exhaust system. The stock exhaust system for your LS1-powered vehicle will depend on exactly what car you are driving, but all of them can be made more powerful by purchasing and installing a high-flow exhaust system. The system allows air to flow more freely out of your engine. Note that aftermarket exhaust systems typically increase engine noise and decrease ground clearance.
- 4). Replace your vehicle's cold-air intake with a performance aftermarket air-intake kit. The cold-air intake is responsible for sucking in air, cooling it, and then routing it to the engine. Performance air-intake kits suck in more air and cool it more efficiently, which results in a horsepower boost for your LS1 engine. Air intake kits are relatively inexpensive and easy to install. As an added benefit they might provide a slight increase in fuel economy.
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