Another update. The 249 RWHP was just one pull with the stock tune. The others have all been 235-237 pretty consistently. So, 249 may have been a fluke.
That said, they figured out how to get around the TPS/Commanded TQ issue and it went up to 275 RWHP!!! They didn't say how much it gained down low. Now on to the VVT tuning. Hopefully there's a bit more they can get from that.
EFR Twin Turbo LFX-GPI Tune-ZL1 fuel pump-10:1 CR forged pistons-3.45 gear-Meth Injection-BMR Trailing Arms, Bushings & Sway Bars-CircleD 4000 Stall-GPI Fuel Enrichment System
647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build