Hey guys, I have a 2011 lml that I built a S475 over stock compound kit. My question is what should the vane percentage be at wide open throttle? I have some people saying 0% wide open vanes and others saying numbers between 30% and 0%. Currently the vanes seem to range between 15% with spikes as high as 40%+ momentarily at wide open throttle. I’ve been working with my tuner to get this dialled in to 0% at wide open. Interesting thing is out of the 5 files I have for this truck the only file that won’t hold 0% is the max effort file, every other file holds 0% no issues.
Truck has zero boost leaks
First revision for the compounds had desired turbocharger boost set at 55 psia, the stock map sensor scales out at 52 psia (37 psi plus atmospheric pressure) I was told the truck is confused and targeting a pressure above what the map can read and that lowering the desired boost table to 51 psi would fix issue, but same vane issues.
It’s my understanding once the boost pressure reaches desired and maintains desired it would hold the vanes open?
Truck has zero boost leaks
First revision for the compounds had desired turbocharger boost set at 55 psia, the stock map sensor scales out at 52 psia (37 psi plus atmospheric pressure) I was told the truck is confused and targeting a pressure above what the map can read and that lowering the desired boost table to 51 psi would fix issue, but same vane issues.
It’s my understanding once the boost pressure reaches desired and maintains desired it would hold the vanes open?
Last edited:
