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tomm.brz · 03-12-2018, 10:52 AM

Hi guys,
in my ecutek tune I noticed that after starting up the engine (when cold start just make it for longer but also warmish start is doing it)
fuel system ststus =1 lasts only few seconds, then goes to closed loop and AFR and cam timings go to values in this log:

https://datazap.me/u/tommbrz/definit...=6-14-28-30-31

AFR Target and Actual goes to 15.10 and Cam intake and exhaust to 2 / -4
After 2 minutes goes finally to open loop idle with correct AFR as tables dictate, 14.7 and cam timings both to 0
Then after all is warmed up goes back to the correct closed loop mode and everything is as expected

Why do I get afr of 15.10 when the car is super cold when actually should be made richer by the maf offset? also dont understand the 2/-4 cam timings

Thanks

03-12-2018, 10:52 AM	#1
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,280 Thanks: 515 Thanked 1,121 Times in 811 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	Cam timings and AFR shortly after start-up Hi guys, in my ecutek tune I noticed that after starting up the engine (when cold start just make it for longer but also warmish start is doing it) fuel system ststus =1 lasts only few seconds, then goes to closed loop and AFR and cam timings go to values in this log: https://datazap.me/u/tommbrz/definit...=6-14-28-30-31 AFR Target and Actual goes to 15.10 and Cam intake and exhaust to 2 / -4 After 2 minutes goes finally to open loop idle with correct AFR as tables dictate, 14.7 and cam timings both to 0 Then after all is warmed up goes back to the correct closed loop mode and everything is as expected Why do I get afr of 15.10 when the car is super cold when actually should be made richer by the maf offset? also dont understand the 2/-4 cam timings Thanks