I will be able to gather more data today. It's 6 Celius at the moment so I expect to be able to replicate the problem.

I do not think that my problem is a knock. It really feel like I hit a brick wall when it happend.

I find out that my boost should be around 20 mmhg vacuum so that explain why my sensor read around -10 psi in mode23.

Regards,

 

Hi there,

Finnaly I was able to record the problem.
Like previous people mention, that was an over boost issue
You can see on the graph the detail and a correction that I propose.
Please tell me if I'm on the correct path or I chould change something else

Regards,

 

bump!