I just got back from the dyno. I had to wait f o r e v e r and when I finally got on the dyno all the employees were leaving. The boss stayed after hours, after all he was the one that told me to return today. Each pull the HP and TQE went up. Because of time constraints we did 2 pulls, a 1/4 run and then a 3rd. pull. I didn't open the cutouts until I arrived at the dyno so no adaptive learning beforehand.

Quick summary of weather corrected numbers/same dyno

Pre downpipes - 283 hp and 291 torque - 12.724 at 108.3157 mph
Downpipes closed - 311 hp and 298 torque - 12.352 at 109.069 mph
Downpipes open - 321.7 hp and 311.7 torque - 12.215 at 110.4506 mph

Les