help tuning turbo vanes for brake

[bikerdan]

Can anyone walk me through which tables I need to change to help my turbo brake work better?
Thanks

[Dashman]

I am not sure if I can help you exactly with your request, but the tables in question are called turbo vane control. The values in the table are percent closed. 90% closed would have the tip of the vane close to the turbine wheel. 0% would have the tip of the vane far from the turbine wheel. When you want to maximize the affect of the exhaust on to the turbine wheel you use a high percentage. Such as when you want the turbo to spool faster and create a lot of boost. When you want to increase exhaust efficiency you use a lower percentage. I haven't used vane control to create a turbo brake, but I imagine you would raise the percentages in the higher RPM range and lower fuel quantity. You might try adding boost in the same range.

[bikerdan]

Thanks, Makes sense

[tokymon]

close the vanes at 5 and 10 mm3 from about 1600 rpm to max

[bmftransam]

x2 on closing vanes, i closed mine to 98 percent in the higher rpm range down to around 1200 rpm and desired more boost in the areas i wanted more braking it should work good if its all done correctly if i recall when i scanned it after setting it all up on deceleration in tow haul and downshifting manually it hit around 11psi, hope this helps