Map VGT [variable geometry control]

[GPoint]

If I had of pressure peaks, in this case, I could use the management VGT to reduce them, without necessarily having to lower the boost pressure? But in the case of a modification ? obtained in terms of pressure as it would result in the vaiazione of a certain percentage or ? always better to proceed in small steps, and test the change on the road?

[biela]

After having climbed the pressure of the turbo, test the car on the road.
Record the data and edit the VGT as ? diverted the pressure.
You can? also affecting the increase in IQ.

Greetings

[ugoboss]

on some I tried to give less pressure than usual to the turbo and give a 2% on the vgt and the machine, and much more reactive.

[SandroMarciano]

[QUOTE=GPoint;77529]If I had of pressure peaks, in this case, I could use the management VGT to reduce them, without necessarily having to lower the boost pressure? But in the case of a modification ? obtained in terms of pressure as it would result in the vaiazione of a certain percentage or ? always better to proceed in small steps, and test the change on the street/QUOTE]

Once used, the conversion factor should be noted that the data in the map are expressed as a percentage, that ? the closing of the vanes, to reduce the peak starts to drop 1-3 percentage points from the area where inject ir? diesel, if you misjudge it, the machine will be? slow to take the turns, but if you find the right balance you will not be pi? the elastic effect, which is when the peak ? very high.

[GPoint]

Once used, the conversion factor should be noted that the data in the map are expressed as a percentage, that ? the closing of the vanes, to reduce the peak starts to drop 1-3 percentage points from the area where inject ir? diesel, if you misjudge it, the machine will be? slow to take the turns, but if you find the right balance you will not be pi? the elastic effect, which is when the peak ? very high.

Hello SandroMarciano, following some discussion, I tried to change the VGT gi? by a few days. Basically my problem was that I had peaks at 1.7 bar when MES I read about 80 mm3 of diesel injected. I realized that the pressure values are increased when I raised the diesel. In the end I worked cos?, given that in the table refers to the vgt I rpm x mm3 the last 2 values of the scale were 65 and 70 mm3 I mod the last 2 breakpoint in the 70's and 80's and I have updated the values inside the table. I redid a p? test with MES and the maximum peak comes in at about 1.6 bar and normally I see values between 1,5\1,55 bar. I don't know if I have successfully changed or if ? was just luck.
However, the changes I tried to make are at the following link: Link

[fabio1207]

Thanks guys I think I learned something about vgt