![]() The needle is designed to give the correct amount of fuel throughout the mid-range and is also designed to allow adjustment from groove 1 to groove 6 with little or no effect below 3000 R.P.M. The design of the needle is where Dynojet spends most of its R&D time. They also have an effect similar to fuel injection by breaking up the fuel as it enters the air stream. ![]() In order to achieve full function and driveability, Dynojet develops shrouds or cap style nozzles for adjusting the upper or lower top end. You find the need to lean out for low speed and richen up for top end or leaner on the top end and richer at the low speed. When aftermarket pipes are used, the power curve is usually not flat. ![]() ![]() Many newer bikes have very flat power and fuel delivery curves when used with the stock exhaust and air-box. ![]()
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