How to Adjust the Timing in a Mitsubishi 3000GT
Adjusting the timing on a Mitsubishi 3000GT requires special tools and a working knowledge of car programming systems. Under normal conditions, the Mitsubishi 3000GT engine control module or ECM adjusts the timing automatically, however aftermarket performance parts require reprogramming the ECM. Adjusting the timing on a Mitsubishi 3000GT allows the tuner to maximize power gains across the RPM range or target specific areas.
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Instructions
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Install the reprogramming software provided by the parts manufacturer onto the computer and connect the computer interface device. Plug the other end of the interface device in the OBD II diagnostic connector under the steering wheel.
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Turn the key to on without starting the engine of the Mitsubishi 3000GT and shut of any accessories such as the radio, climate controls and lights. Turn the interface device on and wait for the computer to confirm automatic connection.
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Run the computer software and enter all of the necessary information pertaining to your vehicle including the vehicle identification number or VIN, found by looking at the top of the driver's side dash through the windshield.
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Select the software version to upload and make any changes desired. Start the data upload and verify the progress bar appears on the monitor. Wait until the data transfer complete message appears. This process takes as long as 45 minutes depending on the size of the file.
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Turn the to off and disconnect the interface kit from the OBD II diagnostic connector. Start the engine and allow it to idle until it reaches normal operating temperature.
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Tips & Warnings
Forcing an engine to run out of its manufactured specified setting can cause serious and permanent damage to the engine.
Failing to fully load the new version leaves the vehicle disabled and may require the assistance of a professional.
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Comments
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This is useless if you haven't installed a performance chip. All I did was install headers and a cold air intake. I've got the shop manual and it gives some mumbo jumbo about grounding a wire in a brown connector by the battery and using a timing light and then advancing or retarding the timing by rotating the crankshaft position sensor counter clockwise and advancing the timing by rotating it clockwise. Problem is, it doesn't rotate. It's in a fixed position. Anyone that knows how to actually adjust the timing please post the information.
