Click on image to zoom

CAS103033 - TIMING COMMANDER Adjustable IAT Interface

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Pricing: $195.26


This gauge is designed to allow “on the fly” adjustments to your ignition timing, when used in conjunction with your favorite “tuner” software/hardware combination. By installing this gauge in the cockpit, you can instantly set additional or subtractional WOT timing using a 16 position selector switch built on to the gauge. Additional ignition timing increases torque and horsepower over and above the preset timing within the vehicle’s ECU programming. And, subtracting timing allows use of lower octane fuel (for road trips and traveling) which will minimize or eliminate detonation as a result of lower octane.

The Timing Commander™ does the task by interfacing with your air temperature sensor wiring. Essentially “fooling” the ECU into thinking the air temperature is cooler or hotter, the gauge sets a relative “temperature” into the ECU. Using your tuner software, you then modify the IAT SPARK ADVANCE CORRECTION table in your ECU. By modifying this table, you essentially force the ECU timing MAF or MAP scalers vs. temperature values to a particular value and use the Timing Commander™ selector switch to set these values.

The 3 digit LED display on the gauge has preset display ranges based upon the switch position. The preset ranges are jumper-selectable and can be displayed in one of four choices:
1) Actual timing, -8 to +7 degrees
2) Degrees Celsius (-40 to +80)
3) Degrees Fahrenheit (-40 to +176)
4) Numeric (001 to 016)
The four different modes allow the driver a selection of preferences. For example, you might choose “actual timing” and set your table values to equal the range choices, or “numeric” to give you a low to high numeric value that corresponds to the amount of timing you choose to set in the ECU table. The display is always relative to the position of the selector switch. The actual timing modifications to the ECU can be set to whatever your requirements need to be. By making incremental changes to the table, you can easily access those changes with the selector switch, and the display provides a digital readout relative to the switch setting.

Installation involves a very simple four-wire hookup. The gauge is a 2-1/16” (52mm) standard package which can be placed anywhere convenient to the driver’s seat. Most applications use a standard IAT sensor with a gray connector, and the kit provides a direct plug-in for that sensor wiring, which leaves only two wires to hook up to your vehicle; switched 12 volts and a ground. The package includes a gauge with red diffuser lens and black bezel, 18 in. ribbon connection cable, controller module, IAT wiring harness and power connector pigtail. The Timing Commander™ comes with comprehensive installation instructions that give examples for timing table modifications. You must use a tuner software package to access and modify this particular table.

Application List



Shipping Information

  • Item Requires Shipping
  • 1.0 lbs.
  • W5.0000” x H5.0000” x L5.0000”

Trusted Specialists GM engine & parts specialists
Located in the USA Owned, operated, & employed
Need Assistance? Call us at 888-748-4655
Mon-Fri 8am-6pm EST
Have a Question Email us and we'll get back to you within 24 hours
Pace B2B