Firmware version – Auto Meter 4381 User Manual

Page 7

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FOR SERVICE SEND TO:

AUTO METER PRODUCTS, INC.

413 W. Elm St., Sycamore, IL 60178 USA (866) 248-6357

Email us at [email protected]

SERVICE

For service send your product to Auto Meter in a well packed shipping carton. Please include a note explaining what the problem is along with your phone number. Please specify when you
need the product back. If you are sending product back for Warranty adjustment, you must include a copy (or original) of your sales receipt from the place of purchase.

2650-1706 -00 2/21/14

© 2014 Auto Meter Products, Inc.

12 MONTH LIMITED WARRANTY

Auto Meter Products, Inc. warrants to the consumer that all Auto Meter High Performance products will be free from defects in material and workmanship for a period of twelve (12) months from date of the original
purchase. Products that fail within this 12 month warranty period will be repaired or replaced at Auto Meter’s option to the consumer, when it is determined by Auto Meter Products, Inc. that the product failed due
to defects in material or workmanship. This warranty is limited to the repair or replacement of parts in the Auto Meter instruments. In no event shall this warranty exceed the original purchase price of the Auto
Meter instruments nor shall Auto Meter Products, Inc. be responsible for special, incidental or consequential damages or costs incurred due to the failure of this product. Warranty claims to Auto Meter must be
transportation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original purchaser of product and is non-transferable. All implied warranties shall be limited in duration to the
said 12 month warranty period. Breaking the instrument seal, improper use or installation, accident, water damage, abuse, unauthorized repairs or alterations voids this warranty. Auto Meter Products, Inc. disclaims
any liability for consequential damages due to breach of any written or implied warranty on all products manufactured by Auto Meter.

Press the mode button until " " is displayed and then press Select. Press Mode to toggle between On and OFF. Press Select to confirm your
selection. The display will flash the new setting. Or press HI/LO to exit without making a change. The display will flash the old setting. If the OFF
selection is chosen, the pressure shown on the gauge is referenced to standard atmospheric pressure, regardless of altitude. If ON is chosen,
the pressure shown on the gauge is compensated for altitude by a second pressure sensor inside the gauge. At higher altitudes, the displayed
pressure is increased to compensate for atmospheric pressure.

This calibrates the tachometer input of the gauge for the number of cylinders. In most cases PPR should be set to half the cylinder number. For
an 8 cylinder engine, PPR should be 4.0. This is important if boost by gear or boost by rpm mode is used. Press the mode button until " " is
displayed and then press Select.. Press Mode to change the PPR value. Press Select when the desired PPR is shown. The display will flash the
new setting. Or press HI/LO to exit without making a change. The display will flash the old setting.

The tach menu allows you to display the engine RPM. Press the mode button until " " is displayed and then press Select. The display
will show the engine rpm, provided the gauge is connected to a proper tach signal source. This can be used to confirm the gauge is properly
connected to a tach signal, and that the pulse per rev. (see PPR) has been set correctly. This is displayed in thousands of rpm. 2,500 rpm would
be displayed as 2.50 on the gauge. Press the Hi/Lo button to exit.

The speed menu allows you to display a speed to confirm that the boost controller has a working signal. Press the mode button until " " is
displayed and then press Select. This will show a speed value, provided the gauge is connected to a proper speedometer signal source. This can
be used to confirm the gauge is properly connected to a speedometer signal.

This value is a relative value, not actual MPH. The value should

increase as speed increases, but the numbers will depend on your particular vehicle. Press the Hi/Lo button to exit.

FIRMWARE VERSION

The menu selection after " " is the firmware version number of the gauge.

Press the mode button until " " is displayed and then press Select. Press Mode to toggle between and . Press Select to confirm your
selection. The display will flash the new setting. Or press HI/LO to exit without making a change. The display will flash the old setting. If is
chosen, the data logger output will represent the pressure shown on the gauge. To calculate gauge pressure from data logger output voltage:

P = (V * 11.25) - 15

Presssure is referenced in PSI. If pressure is negative, vacuum is referenced as inches of Hg using psi * 2.036.
If PSA is chosen, the data logger output will represent the actual sender output voltage.
To use this feature, you must have a data logger system installed in the vehicle and connect the data logger output from the gauge to the data
logger. Pins number 4 (black/white wire, ground) and 10 (blue wire, signal) in the connector on the back of the gauge are the data logger sensor
signal and ground connections that must be connected to the data logger. After connecting the gauge to the data logger, refer to your data logger
instruction on how to calibrate the data logger to use the signal. The signal provided is a linear 0-4v output from 30inHG (-14.73 PSI) to 30 PSI.
Zero pressure is equal to 1.333v. Pressure above 30 PSI may not be seen on the data logger output signal.

BAROMETRIC COMPENSATION ( )

DATA LOGGER OUTPUT (

)

PULSE PER REVOLUTION ( )

TACH ( ) AND SPEED ( ) SIGNAL TEST

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