Hi all, quick question for those of you running a VAP stage 2 tune who also have Active cruise control fitted.

Yesterday I received a new flash file to include Adaptive cruise function to re enable my ACC function, went for a quick drive just now to make sure and adaptive cruise function is indeed re enabled, but the green cruise control indicator on the outside ring of the speedo always sets to 5kph below the speedo needle.
So if i go to set at 80kph, the speedo needle shows 80kph but the green cruise control indicator is set at 75kph.

Have any of you with the VAP stage 2 tune with ACC option experienced this, also wondering if the discrepancy is re learnt by the ACC module?

 

I only have the stage 1 on my N/A V8 but I've noticed a 3-4mph difference on my cruise control vs actual speed as well. I asked the dealership about it and was told it was "within tolerance".

 

Have had it sorted by Chris at VAP with an updated tune file.

It is due to the up rating of the factory speed limiter settings which are increased and re set with the VAP tuning file. Seeing as though I have no need to travel above 250kph road speed and my trap speed @ 400m will be lower than 250kph I have had the factory speed limiter restored.