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Yes, but it requires some engineering know how. First, you need to consider the 3 essentials the engine needs to operate; spark, gas, and motion (starter). For the spark, you'll need to bypass the coil and wire it thru a switch to the battery. Then you need to time the spark from the coil going into the center terminal on the distributor cap. You can do this by making a 'bump' on the rotor that opens a makeshift switch inside the distributor cap. The coil will discharge when the switch opens, sending spark to the plugs. This is how the old carburetor engines worked and this 'switch' was called the points. Next you need to have fuel available in a jar near the engine. Use a vacuum line to allow the engine vacuum to suck in the fuel as it needs it from this jar. Finally, pour a teaspoon of gas into the throttle body and then start it up. The starter should turn over without the ECU. Granted this is very primitive, but should work with adjustments to the 'points' and fuel orifice. This setup will not last long and the engine will run very poorly with none of the sensors operating and the timing being your best guess. You might also destroy you catalytic converter, so don't try this on a 'good' car.

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Q: Can you drive a Honda Prelude without the ecu unit?
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