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backfire set with cut off

Practical Dyno Tuning

Discussion and questions related to the course Practical Dyno Tuning


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I see lot of cars backfiring(baaang with fire ) in the cut off (the red line ) like drift cars ...how to set that in stand alone ecu? what should I do to make that happen?

This is achieved by using an ignition cut rev limit which results in unburned fuel and air passing through the exhaust system. To increase the effectiveness of this the ignition timing can be retarded to create an ignition source in the exhaust system for the unburned fuel and air. Be aware that an ignition cut can cause issues with some valve trains and this will also generate a lot of heat in the exhaust system.

I got it...thanks for the Quick Reply