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A new dash

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I’ve always enjoyed having lots of gauges in a modified car. Even in my first car – an air-cooled, 2 cylinder Honda Z – I fitted an oil temperature gauge. Subsequent cars have had gauges that show everything from exhaust gas temperature through to air filter restriction.

So it’s not surprising that I have been enjoying the MoTeC CDL3 digital dash that I have fitted to my Honda Insight.

What has surprised me, though, is how much my enjoyment of the car revolves around the dash. These days, where driving fast means that you get locked up, having the ability to be entertained by the dash rather than by just the driving is a major advantage. And being able to program the dash to show the parameters you want adds another layer of enjoyment.

So I have the dash displaying on the main screen:

– Engine rpm (bar graph)
– Speed (derived from the dash’s GPS input)
– Gear (worked out by the dash based on road speed and revs)
– Fuel level (using the standard Honda fuel tank sensor, with the result calibrated in per cent)
– Engine temp
– Lambda number (showing mixture strength, where Lambda 1 = 14.7:1 AFR)

Then, on the bottom line of the screen and able to be scrolled through by pressing the standard Honda FCD button on the dash, I can further bring up:

– Manifold pressure
– Inlet air temp
– Fuel injector duty cycle
– Engine oil pressure
– Engine oil temperature
– Ignition advance
– EGR valve duty cycle
– Water/air intercooler pump duty cycle
– VTEC on/off
– Lambda short term trim
– Lambda long term trim

The dash is also able to be configured to display different text-based warnings. I currently have warnings displayed for:

– Seatbelt
– Door open
– Engine hot
– Engine cold
– Oil pressure
– Lean
– Battery level
– Inlet air temp
– Fuel level
– Change up
– Change down
– ECU hot
– Dash hot

These warnings are all ‘smart’ – eg the seatbelt warning shows only when the car exceeds 5 km/h with the seatbelt off, and the ‘change up’ warning shows only when a certain combination of throttle position, gear, manifold pressure and road speed occurs.

The CDL3 dash is now part of the old range of MoTeC dashes that use a B&W LCD (rather than the newer models’ colour displays) and cannot be configured with anywhere near the versatility of the current stuff. However, the major advantage from my perspective is that the old dash shape fits perfectly into the Honda’s instrument binnacle.

So what can’t the CDL3 do, things that I’d really like? The answer is not what I would have thought before buying it: more than anything else, I’d like the dash to be able to perform maths functions. For example, to be able to show trip fuel economy, where fuel used is divided by distance travelled. And I’d also like it to be able to show maxima and minima of all readings, and….

In fact, the CDL3 has been such a success that I am upgrading to the ADL3 dash – same footprint and display, but the ability to do maths functions… and a whole lot else. Luckily, like the original CDL3 dash, I have found one second-hand – as I write, it’s on its way.


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