How to Improve the Power of a BMW 325i

1. Replace the air filter. The air filter that comes standard with the BMW 325i will not allow as much cool air to enter the engine as an aftermarket option will provide. By allowing more cool air to enter the engine, the car will be able to move faster, which will increase power.
2. Replace the spark plug wires on the car. If the spark plug wires are worn down, they are actually providing resistance against the car as it attempts to move and as a result will slow down the vehicle. New spark plugs will provide lower resistance and increase power from the engine.
3. Place additives into the coolant reservoir of the 325i. Coolant additives reduce the overall temperature of the car while it is moving and allows it to move faster when the driver presses on the accelerator.