Engine

There are many different types of engine modifications that can be made to a Jeep Wrangler YJ to improve its performance. Some examples include:

Cold air intake: This can help to increase horsepower and torque by allowing more oxygen to reach the engine.
Exhaust: A high-performance exhaust system can also help to increase horsepower and torque, by improving the exhaust flow.
Engine tuning: This can involve reprogramming the engine control unit (ECU) to optimize the air/fuel ratio, ignition timing, and other parameters for improved performance.
Cylinder head porting and polishing: This mod can increase the airflow into the engine, boosting the horsepower.
Camshafts: Upgraded camshafts can help to increase the lift and duration of the valves, leading to improved performance.
Some of these modification may require additional supporting modifications such as, exhaust, ignition, or fuel system upgrades to work correctly and efficiently.