Nanjing Tongchang Environment Tech Co., Ltd. has recently released a revolutionary new product for motorcycle enthusiasts - the VariReg. This innovative device promises to improve the performance of the fuel system on motorcycles, and therefore enhance the overall riding experience for users. In order to ensure optimum results, users should follow certain steps when installing the VariReg.
The first step is to ensure that the vehicle is running correctly through all rpm ranges and idles correctly before attempting any work. As such, it is highly recommended that a pressure/flow test be carried out before and after installation of the VariReg to determine fuel system condition. The stock HD pressure is 300 kPa/44 psi, while the VariReg as delivered is 360 kPa/52 psi. This will allow users to better understand how the VariReg has impacted their motorcycle's fuel system.
In some countries, gas stations do not final filter the fuel. Therefore, Nanjing Tongchang Environment Tech recommends that the fuel filter canister be replaced every 15,000 klms (10,000 miles). This is because a restriction of the fuel can occur by way of a blocked or partially blocked filter, which will result in difficulty in tuning or failure to obtain satisfactory results during tuning. If users experience difficulties in tuning, they are advised to see the section on diagnosing fuel filter and pump faults.
The second step in the installation process involves removing the air filter cover, air filter, and backing plate. Users should check the Throttle Position Sensor value at completely closed throttle, as best performance will be obtained at the nominated settings. This will require backing off the idle screw and cold start idle actuator and screw adjustment, as described in the workshop manual. The original T.P.S. values should be recorded for possible future reference.
To set TPS values without the HD breakout box, users can refer to the VariReg TPS Setting for Harley-Davidsons section. The T.P.S. values must be set to 1995 1996 175 mV (+/- 25mV) 1997 2001 275 mV (+/- 25mV). Users must ensure that throttle plates are completely closed, and no binding exists in cables to obtain the correct value setting.
The third step is to reset idle screws to approximate previous settings. There is no need to start the engine at this point. The fourth step involves completing a full or partial fuel tank removal, as described in the workshop manual. Finally, users should remove the stock fuel pressure regulator as described in the workshop manual and leave the Horn removed from the vehicle until after tuning. This will allow ease of access to the regulator.
Overall, the VariReg promises to be a game-changer for motorcycle enthusiasts, offering improved fuel system performance and enhanced riding experiences. If installed correctly, users can expect to see a noticeable improvement in their motorcycle's performance. With the steps outlined above, users can ensure that they install the VariReg correctly and safely, and enjoy the benefits of this innovative new product.