RIFE Ford 8.8" 32 Tooth High Def Driveshaft Speed Sensor Kit Mark WIlliams 39023 997.1 The stock convoluted intake tube The stock convoluted intake tube is replaced with a smooth carbon tube which is also larger in internal volume with a starting internal diameter of 111mm (4 Practicality during normal driving is also improved as this turbo kit ceases to lack torque anywhere in its powerband Due to the design of these rear ends Motion Raceworks High Resolution Driveshaft Speed Wheel offers amazing quality driveshaft speed data with a high resolution approach to help smooth out your graph and deliver accurate data to your recording device or traction control