Hi,
Sounds like your on the right track, best thing to do is change maps 1 by 1 so you can see what does and doesn't effect fuel pressure.
You'll then see what needs changing and what doesn't, log and see if fuel pressure increases.
cheers.
Cheers for the response! I've actually been looking into it further right now.
The FR description of KLLFPRSG is something like 'Characteristic curve delivery degree HDP gradient limitation prsoll'
I'm presuming the map is essentially just like the characteristic curve of the pump. Since its a fixed displacement pump I think my method of extrapolating values, to find new ones for higher pressures may be correct.
Unfortunately there isnt actually a function description for HDRPSOL in the FR - it states Bosch were awaiting the info from VAG.
I then looked at MED17 FR knowing it may be similar and found the same. function description for the HDRPSOL section.
Anyway I believe I've changed enough maps for the rail pressure to be increased but i just like to know what i'm changing and why.
Have you ever changed this table and or have you fitted larger HPFP internals? I currently have stock HPFP internals.
