TechnoMotive Gauge Modifications

So you've installed a second boost gauge because the stock gauge is too inaccurate and doesn't have enough range. What to do with that waste of gauge? It sure is in a nice place. Its location right below the RPM meter makes it easy to keep an eye on it while drag racing instead of having to look at a gauge on your A-pillar or in your center console.

Well, we reprogrammed the ECU to display just about any sensor input or variable available to it. Here is a list of what we have tried and what people have been requesting to give you an idea of what can be done.

• Oxy Boost Gauge during idle (1st generation)

  Oxygen sensor meter, or Air/Fuel meter - This new "oxy" gauge acts lot like one of those expensive air/fuel ratio meters, except you don't have to do any installation!
• Spark advance - Here's one you won't find in any store. A real-time look at the amount of spark timing advance the ECU is using, in degrees.
• Fuel Injector Duty Cycle - This one definitively answers the question, "Am I maxing out my injectors?" Shows the current open time of your injectors as a percentage of the maximum the ECU will ever leave them open. If the gauge hits the top, you might be leaning out your engine!
• Battery voltage - A simple volt meter display lets you know how your battery and charging system are doing.
• "Octane", or percentage of maximum spark advance - This one is related to the bleeder solenoid LED mod, except that you get to see the entire range of spark control instead of simply an single good/bad indicator. As the knock events become more frequent and severe, this meter will decrease in value. Useful for diagnosing those difficult "hyperactive knock sensor" or "bad gas" problems.

All the gauges above look real handy, and you can't make up your mind which one to pick. So why should you? This modification also allows you to select which of five different gauges you want to look at before you start your engine, using the throttle to make your selection. (Please note that once the engine is running, you are locked onto your selection until the engine is shut off once again.) The ECU will even remember your last gauge selection between starts. Read our instructions on how to use the gauge selector.