What I don't understand is how MSR's tune gets peak torque at approx 3750-4000 rpm and yours is 5000 rpm (regardless of what gear the run was in).

The turbo is simply not spooling up as fast as what seems to be possible.

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[COLOR=Black]Liberty GT Spec B tuned 240 HP & 372 Nm at the hubs.[/COLOR] "Instead of banning high performance cars - ban low performance drivers"