Auto Meter 4381 - Manual (Page 2)

Connect the tach signal to the negative side of the coil* when using a standard ignition. HEI ignition systems will provide a tach signal terminal
off of the distributor cap. If using an electronic ignition module or a factory PCM, a tach signal may be available from the ignition box or PCM.
If the vehicle has multiple ignition coils and no tach output is available from the PCM, the Auto Meter tach adapter part number 9117 is
recommended. Contact Auto Meter if needed for additional information on your application.
*Warranty will be void if connected to coil when using an aftermarket ignition box such as, but not limited to products from the following
manufacturers: MSD, Crane, Jacobs, Mallory, Holley, Etc.. Prior to installation of your tachometer, check with the ignition box manufacturer for
recommended tachometer signal location.
The Auto Meter electric boost controller operates by limiting the boost pressure seen by the wastegate to effectively increase the boost output
by the turbocharger. The Auto Meter boost controller offers configurable warnings, scalable bar graph display, and over boost protection but it is
important to keep watch of your boost levels to keep you and your engine safe. The boost pressure sensor has a maximum pressure capacity
of 30 PSI. Exceeding this pressure can cause damage to the sensor, connections, or most importantly, your engine. Data log output maximizes
at 30 PSI, exceeding this pressure may not be seen on the data log output signal. It is never recommended to increase the boost pressure over
double the wastegate spring pressure.
If the vehicle has a factory speed sender, you may use the factory signal for the boost controller. This can be accomplished by splicing into the
factory signal from the sender or using a speed output from the PCM or transmission controller.
Any speed sender or electronic module that meets the following two conditions can be used:
1. Pulse rate generated is proportional to vehicle speed.
2. Output voltage within the ranges listed below:
a. Hall effect sender, 3 wire (5 to 16V)
b. Sine wave generator, 2-wire (1.4 VAC min.)
c. Source wave singal from ECM, PCM, TCM 5V to 16V
Recommended – Auto Meter Hall effect sender, 3 wire, 16 pulses/revolution
5291 Standard 7/8" - 18 Thread
5292 Ford, plug in
Install the boost control solenoid using new vacuum lines. Mount the boost solenoid away from any direct heat sources and route all vacuum
lines away from heat or moving parts. If the factory setup includes a restrictive mechanical control or an electric solenoid, they will need to be
bypassed for the boost controller to work as intended. It is recommended that the boost solenoid vent port is routed back into the intake, after
the air flow meter (if equipped) and prior to the turbocharger.
Port 1 – Sintered muffler
Port 2 – To Wastegate
Port 3 – To turbo pressure source Port 1 – Sintered muffler
Port 2 – To bottom port of wastegate
Port 3 – To turbo pressure source
TACH SIGNAL
(REFERENCE PULSES PER REVOLUTION, PAGE 6)
OPERATION
SPEED SIGNAL
(REFERENCE TACH AND SPEED SIGNAL TEST, PAGE 6)
BOOST SOLENOID INSTALLATION
SINGLE TURBO - INTERNAL WASTEGATE SINGLE TURBO - EXTERNAL WASTEGATE, SINGLE PORT