If you look at the compressor maps for the new GTX2863r turbos no one should be expecting them to outperform the GT2860r turbos at low boost levels. Where the GTX series shines is > 15psi, these things flow MUCH more air up top and are sort of like the equivalent of a gt2860r down low and a gt2871r up top.
There is basically more potential for power at higher boost without sacrificing spool/low end torque on lower boost, so you get the best of both worlds.
Congrats again Ron, I would be curious to see the dynojet numbers only because I know how much mustangs fluctuate.
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