jzx_jake Posted October 9, 2018 Report Share Posted October 9, 2018 Having an issue with individual cylinder fuel trims not working with dual fuel tables enabled. If I turn off dual tables it works, then if I turn them back on it still works until the ECU is restarted. Any ideas? 1_FlexFuel_tune.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 9, 2018 Report Share Posted October 9, 2018 Hi Jake, Yes, I can confirm this is not working correctly, I just tested this myself. How come you are not using modelled-multifuel fuel equation? It works correctly if you use modelled multifuel mode. I will add this one to the list of things to fix. Quote Link to comment Share on other sites More sharing options...
jzx_jake Posted October 9, 2018 Author Report Share Posted October 9, 2018 I tried using modelled mode briefly and couldn't get the car to run using it. I'll give it another try. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 9, 2018 Report Share Posted October 9, 2018 20 minutes ago, jzx_jake said: I tried using modelled mode briefly and couldn't get the car to run using it. I'll give it another try. Ok, give it a shot and report back here if you cant get it to run, it will only be a matter of a setting out somewhere. Quote Link to comment Share on other sites More sharing options...
jzx_jake Posted October 9, 2018 Author Report Share Posted October 9, 2018 Just needed to increase the fuel table numbers. It's running good now on modelled fuel, nice to have the ecu take care of the calculations instead of tuning two fuel tables Thanks for your time. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 9, 2018 Report Share Posted October 9, 2018 Also dont forget to turn off the IAT trim table. You may still need two VE tables (as even if all your injector and fuel property data is perfect, VE will still change a little) but at least your individual trims will still work if you need to use two tables now. Quote Link to comment Share on other sites More sharing options...
jzx_jake Posted October 10, 2018 Author Report Share Posted October 10, 2018 Okay I’ll turn that off. One more question, is there a typical value for fuel charge cooling coefficient of ethanol? Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 10, 2018 Report Share Posted October 10, 2018 Every engine is potentially different, but in our multi-fuel example map (from our Subaru EJ20 dyno mule engine), it has a value of 14deg for petrol charge cooling and 8deg for ethanol. Quote Link to comment Share on other sites More sharing options...
jzx_jake Posted October 10, 2018 Author Report Share Posted October 10, 2018 Interesting, I would have expected the ethanol number to be a lot higher if I'm understanding that setting correctly. I'll set it up per the help menu instruction. Thanks again Quote Link to comment Share on other sites More sharing options...
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