Kinsler_Handbook_#32 December 2017

Kinsler Fuel Injection, Inc, 1834 THUNDERBIRD TROY, MICHIGAN 48084 U.S.A. Phone (248) 362-1145 Fax (248) 362-1032 146 SENSORS FOR EFI SYSTEMS MANIFOLD ABSOLUTE PRESSURE (M.A.P.) SENSOR May be used either as a barometric sensor, (compensates for atmospheric pressure change), or a Manifold Absolute Pressure sensor, depending on how the engine management system is configured. This sensor may be remote mounted and connected to the wiring harness or it may be mounted inside the ECU and may require external plumbing. The ECU powers the MAP sensor via a fixed 5-volt supply, and the sensor sends a variable 0-5 volt signal back proportional to the absolute pressure. When used for manifold pressure/vacuum the unit is sensing relative engine load. A high vacuum (low absolute pressure reading) indicates to the ECU that the engine is experiencing less load, therefore requiring less fuel. As the absolute pressure reading increases, the ECU would increase the pulse time to the injectors, therefore suppling more fuel. VACUUM SIGNAL JUNCTION BLOCK AND COMPONENTS Vacuum signal junction block for collecting vacuum/boost signal on individual throttled runner manifolds. This junction block system is constructed with fittings and tubing to provide a good signal response while also minimizing excess air bleed which causes idle RPM control problems. See Page #135 for vacuum/boost reference kits and components. #10905 - Signal Damper with 3/16” barbed fittings Brandon Switzer’s NMRA PRO 5.0 Mustang, Fastest N 2 O/EFI car 7.54 @ 189 MPH Uses Kinsler High-flow 4-barrel throttle body and EFI system components #10901 with barbed fittings installed #10901 with quick release fittings installed © 2017 10654 MAP sensor, 1 Bar, GM, EFI Technology 10655 MAP sensor, 2 Bar, GM 10656 MAP sensor, 3 Bar, GM 10657 MAP sensor, 1 Bar, GM, Accel/DFI, F.A.S.T. 10658 MAP sensor, 5 Bar, F.A.S.T. Note : 3/16” barbed fittings may be changed to 3AN male flare fittings. SIGNAL DAMPER The strong intake pulses on a tuned I.R. manifold along with a high performance or racing camshaft will create fluctuations in the signal sensed by the MAP sensor. The Kinsler signal damper will smooth out the signal pulsing. This is accomplished by flowing the signal across an orifice and into the accumulated volume within the damper. Note: transient signal amplitude may be slightly reduced. 10905 Signal damper, 1.900" diameter x 4.250" long (NOT including fittings)