PSA EDC16C34 3bar MAP sensor linearization

by **wld** » Tue Jun 21, 2016 10:22 pm

I need to replace the original 2.5bar MAP sensor with a 3bar one from tdi engines.
I have a 307 1.6hdi with hybrid turbo and 1.6bar of boost.
New sensor is 0281002401 or VW 038906051C
I have seen the 2X1map used in VW dumps, but my dump has a 4x1map for the same function and I'm not sure my linearization is correct. With engine off it measures the same pressure as the atmospheric sensor, but the car seems to have some boost issues.
Here are my scalings:

original MAP sensor linearisation.jpg

3 bar MAP sensor linearisation.jpg

Can someone more experienced confirm my reasoning ?