This is the most common way to modify a CVK carburetor. It involves drilling out the air correction jet, which is located in the carburetor's throat. This will increase the amount of air that is mixed with the fuel, which will make the engine run leaner. A leaner mixture will result in more power, but it can also cause the engine to run hotter.
2. Modify the slide needle.
The slide needle is a long, thin metal rod that is located in the carburetor's throttle valve. It controls the amount of fuel that is delivered to the engine. By modifying the slide needle, you can change the way the carburetor delivers fuel at different throttle positions. This can be done by filing the needle's tip, or by shimming it up or down.
3. Install a larger main jet.
The main jet is located in the carburetor's float bowl. It controls the amount of fuel that is delivered to the engine at high throttle positions. By installing a larger main jet, you can increase the amount of fuel that is delivered to the engine, which will make the engine run richer. A richer mixture will result in more power, but it can also cause the engine to run cooler.
4. Install a performance air filter.
A performance air filter will allow more air to flow into the carburetor, which will help the engine to run more efficiently. This can result in more power and improved fuel economy.
5. Modify the exhaust system.
A modified exhaust system can help to improve the engine's performance by allowing the exhaust gases to flow more freely. This can result in more power and improved fuel economy.
6. Remap the ECU.
The ECU (engine control unit) is the computer that controls the engine's operation. By remapping the ECU, you can change the way the engine runs, including the fuel injection, ignition timing, and boost levels. This can be done by using a aftermarket ECU tuning software or by sending your ECU to a professional tuner.
7. Install turbocharger or supercharger.
A turbocharger or supercharger is an air pump that forces air into the engine. This can increase the engine's power by 20-50%. A turbocharger uses the exhaust gases to power the air pump, while a supercharger is powered by the engine's crankshaft.
8. Increase compression ratio.
The compression ratio is the ratio of the cylinder's volume at bottom dead center to the cylinder's volume at top dead center. A higher compression ratio means that the air/fuel mixture is compressed more, which results in more power. However, a higher compression ratio can also cause engine knocking, so it is important to make sure that the engine's fuel and ignition systems are properly tuned before increasing the compression ratio.
