Hello everybody,

I've spent ages trying to actually understand how to use the 5120 hack that's defined in the kp file I use, nobody actually goes into it or that I could find with Google (tried yahoo, Bing etc to see if other results are found)

I ended up buying a tuned ecu which as it turns out uses the 5120 hack so could see what values they used but want to understand why they used those values or what it effectively does

It looks alot simpler in Med9 than in Me7 as I downloaded the Me7 5120 hack files previously and had a look through.

It looks as if the tuner has set PVDEMX to 4900 rather than the stock 2900 and then using a 4 bar map sensor but with 3 bar map sensor values for the scaling and offset so PVDEMX is 2bar higher and then the sensor is calibrated 1 bar lower so you can request 2.5 bar rather than 1.5bar as stock? Is that correct or is the underscaling of the sensor to request more by tricking the ecu and then PVDEMX allows vcds to read the correct boost pressure?

Thanks in advance