Question to the self-mapper among us: Knock detection?
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06-03-2010, 03:13 PM
Post: #2
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Start map: Fuel -> based on engine simulation software. A good estimate of the final torque curve (comparable engines) is a good start too. Add 25% everywhere and calculate how much fuel you need for the torque. Use that to estimate dutycycle.
Iginition..Start with the 4AGE base map. smooth out any bumps and take out 5 degrees of timing. First pass: drive car with data logger untill all cells in fuelmap have corresponding A/F ratio values. Adjust fuel to target A/F-ratio's. (Megatune software is supposed to have a autotune mode for this). Second pass. Plug in headphones/ knock amp, etc (best not to use auto-detection during tuning). Start advancing ignition untill engine makes no more power or starts to knock. Very difficult to get right without a decent load dyno. After that the finetuning starts.. not much use doing that without a dyno either. However, car should be perfectly driveable. A wheel to steer the front of the car A pedal to steer the rear |
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Question to the self-mapper among us: Knock detection? - MartinS - 06-03-2010, 12:49 PM
[] - NoHachi - 06-03-2010 03:13 PM
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