Hi
I had my 2015 VW Tiguan 1.4 TSI (45,000 km) checked two days ago at a VAG garage for bad fuel consumption (some 25% higher than normal) with no CEL.
They said the car is fine and gave me 2 screenshots that I will attach below.
My first question is: Although I know very well what LTFT stands for and what it does, I have never heard of LT Adaptation of mixture formation. Can you tell me what is that all about?
My second question is: At idle, as you can see, LT Adaptation of mixture formation is -10.2% but when engine gets revved, LT Adaptation of mixture formation goes to -2.3%. How should I interpret that and is my car running OK? There is no misfire, no hesitation, no bad start, just random slight trembling at idle.
I had my 2015 VW Tiguan 1.4 TSI (45,000 km) checked two days ago at a VAG garage for bad fuel consumption (some 25% higher than normal) with no CEL.
They said the car is fine and gave me 2 screenshots that I will attach below.
My first question is: Although I know very well what LTFT stands for and what it does, I have never heard of LT Adaptation of mixture formation. Can you tell me what is that all about?
My second question is: At idle, as you can see, LT Adaptation of mixture formation is -10.2% but when engine gets revved, LT Adaptation of mixture formation goes to -2.3%. How should I interpret that and is my car running OK? There is no misfire, no hesitation, no bad start, just random slight trembling at idle.
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