STX-12F/STX-15F/Ultra LX/Ultra 250X/SXR
The R&D “Big Cam” Engine Idle Tuner kit is a simple bolt on parts kit that works to remove the O.E.M. AIC (Air Idle Control) Stepper Motor from the throttle body, and replace it with a fully adjustable, all billet needle valve assembly. The R&D Kit allows precision “Idle” air volume adjustments to be made and securely locked down when “Higher Lift”, “Larger Duration” Camshaft kits are used/installed, along with tighter LSA (Lobe Separation Angle) packages. As Camshaft Lifts/Durations, and aggressive LSA adjustments are made, Engine Vacuum drops or lowers, and engine idle becomes more difficult or almost impossible to stabilize or control, especially with the OEM “Vacuum Referenced” AIC Motor. The OEM AIC is calibrated to concentrate to a much higher Vacuum, therefore aggressive RPM Hunting and Engine Stalling occurs when big cams are installed. The R&D Big Cam Idle Tuner will work to allow a perfect Engine Speed Idle (RPM) with any Camshaft kit, and with just about any LSA Package all the way up to super aggressive R&D RC4 Kits! Super easy to install in 5 minutes, and very easy to adjust! The R&D Idle Tuner Kit fits on all Kawasaki STX-12F/STX-15F/Ultra LX/Ultra 250X/SXR, all years. Available from Hot Products USA and GoFastUS.