F350 Super Duty vs 3500 Denali vs The Ike Pulling 30k lbs

RoyJ wrote:


Again, watch Gale Banks explain the limit of the stock L5P turbo. To go above the stock max power at sea level, essentially you have to "choke" your turbine side by activating the variable geometry nozzles at WOT (to gain turbo rpm, and therefore CFM), which is not within OEM GM parameters.

Doing that would create a lot of drive pressure and you would likely pop a head gasket before you had turbo failure. Not to mention a restriction like that would cause extremely high EGT's. It does not make sense to do this because you will not be able to make more power for any real period of time.

I know back when I had the stock VG turbo on my 2014 Cummins, I had the VGT vane position on my monitor. Both in stock form and after being tuned, going WOT the vanes would restrict to about 50% or so for a few seconds to get the wheel turning and then go fully open.