Handling performance improvement
Air filter
The air filter protects the engine from dust and dirt getting inside. Factory filters, unlike aftermarket ones, tend to have a more restricted airflow. Switch to a more efficient air cleaner and filter that will let you increase engine power.
Cooling system
The intercooler is used to cool the air before it enters the throttle body. Cooled air is richer in oxygen, so more oxygen and fuel enter the engine and its power increases.
Intake manifold
The intake manifold ensures an even supply of air to the cylinders. The aftermarket version delivers more air, which significantly increases engine power.
Fuel system
The air forced into the engine needs to be compensated for by supplying more fuel. An upgraded fuel system will maximize fuel delivery to the engine, which will increase its power.
Forced induction
There are many types of forced induction. At lower RPMs a supercharger works best, unlike a turbocharger, which tends to provide less boost unless the engine is running at higher RPMs. Either way, installing or upgrading forced induction will give the engine an excess of torque — and that's a simple way to accelerate, and more importantly, to accelerate fast.
Electrical system
A lightweight battery will reduce the car's overall weight, which matters, while reliable grounding and electrical contacts will ensure uninterrupted operation of the ECU and ignition.
Ignition
As you upgrade the engine, you need to upgrade the ignition too. A high-performance ignition system delivers more voltage to ignite the fuel in the cylinders, which in turn drives the wheels.
ECU
An aftermarket electronic control unit (ECU) connects all the installed engine components. It's the "brain" of your car, keeping all its elements working in harmony, improving efficiency and performance.
Cylinder block
The cylinder block is the foundation of the entire internal combustion engine. By upgrading it, you'll increase the engine's service life and power.
Camshaft
The camshaft controls the movement of the valves in the cylinder head. The aftermarket version of the shaft differs from the stock one in valve lift and timing, delivering higher power.
Cylinder heads
A modified cylinder head has altered port size and design, which determine the volume of air and fuel entering the combustion chamber. Improved airflow increases engine power.
Exhaust manifold
High-performance exhaust manifolds are where exhaust gases go straight from the combustion chamber. Upgraded manifolds provide greater flow and, as a result, higher power.
Exhaust system
Exhaust gases from the engine travel through the exhaust system. A wider exhaust pipe will let the engine rev up and provide additional flow.
Clutch
The more power the engine produces, the stronger the clutch needs to be. An aftermarket clutch will not only let you shift gears faster, but also accelerate the car to top speed much more quickly.
Nitrous system
The nitrous system can be upgraded so that nitrous refills over time or through actions such as drifting, near misses, driving in oncoming traffic, airtime and slipstream. Nitrous is perfect when you need quick acceleration.
Suspension
By upgrading the suspension, you can adjust the stiffness of the springs.
Differential
By upgrading the differential, you can change its lock in the handling tuning section.
Tires
New tires affect road grip, which changes handling characteristics.
Brakes
By installing upgraded brakes, you can increase or decrease braking force and adjust the brake balance between the front and rear wheels.
Handbrake
By installing an upgraded handbrake, you'll be able to adjust braking force across the full range of values.
Anti-roll bars
Anti-roll bars give the suspension lateral stability; by upgrading them, you can adjust body roll.