I have this problem ultimately usually when i am with 5th and 6th gear with almost full throttle.I had remaped the ECU to 219Hp but this was happening once every semester.Now is happening almost every time i m taking out the car and pressin it.I can t find what is the problem.I changed twice the ECU programming but the problem is still there.When i stop the engine and start it again the check engine light is disappearing and full power is coming back.The meccanic can t find anything wrong.The tubes are ok.Maybe is someone of the sensors but which one?
Anyone else with the same problem?

 

Are you getting whole or half check engine light? I assume since you went to 219 you have an S?

 

So you tuned the car and expect someone else to diagnose it? Even if you gave us all the details I doubt we can help. But as a start what OBD error codes are popping up? And what year, how many miles, etc. etc. HPFP been replaced?

 

The one who tuned the car didn t helped me a lot till now and the meccanic too.The errors are missfires,super knock to some cylinders,i think also negative pressure and also something else that i have to ask again to remember it.Is the R60 S All4 2010 with 75.000 km with a remaped ECU and a more free airfilter(nothing else is changed).After a good search and reading yesterday i think the problem is the diverter valve(or the carbon on the valves).I have already ordered a new valve.I let you know.
I must buy also a multigauge to check during the drive the engine.I think the one which suits to me is the PLX cause has a retro style and not the P3Car cause i have to put it into the airvent(and i dont like the idea).

 

No its a whole check engine light and the turbo is off.Yes its an S

 

Power is loose?
Just need the special PT Barnum tool to tighten it.
I can sell you one.