Motorism Posted January 22 Report Share Posted January 22 Hello, I'd like some feedback on how to handle ignition timing during cranking, especially from people using Ethanol. After searching the software and the guide, I understand that Ignition timing during cranking could come from 2 different sources : 1. Idle Ignition control is OFF : Ignition Timing setpoint comes from the Main ignition table (+ corrections) 2. Idle Ignition control is ON : ignition timing setpoint during cranking will be equal to ignition idle target I'm in the second case and it's a problem because my sweet spot for idle control is +5°CRK whereas the sweet spot for cranking the engine with the tank full of ethanol E85 during the winter is more like +25/30°CRK. With 5°CRK the engine starts, but it's a bit chaotic to be honest, and crank enrichment is not the problem here, stock ECU would start the engine perfectly, in the same conditions, thanks to a dedicated spark map during cranking. Any workaround ideas ? Would it be possible to have a dedicated Spark map during cranking ? Or maybe a Low RPM lock out setting in the Idle function that would disengage idle control during cranking so we could use the main ignition map and keep Idle Ignition Control ON ? Thanks Charles Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.