Cheers.
Mine is different, after awhile and when the rev goes highter the boost get lower.
I was looking at the boost when I take the foot off the accelerator and at 70mph no acceleration there is a boost of about 2 1/2 PSI. ( not 5 like I thought, sorry)
Perhaps I need to open the wastegate a little more, it might not open totally or not fast enough, then this could be the reason why the ECU is freaking out?
This mean another time under the beast, taking the underbelly off and play with the acuator
Oh well...
Thank you again Ngarover, I will try to achieve a proper curve
To be continued.
Olivier

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E300TD year 2000. RUSTY SOLD
cost a fortune to maintain on the road
but run well on WVO
Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long?
Third lasted a month then went away...
Fourth now... Corroded too...