That's crazy. Its funny though even with a rough tune he's only getting 800HP with 8 Turbo's on an LS1. Mallet's NA LS1 gets 500HP/500TQ at the wheels ( albeit through stroking ) and Lingenfelters Twin Turbo LS1 gets 650HP/600TQ at the wheels and both are only 93 octane.
I thought for sure this bad boy would break 1000HP without breaking a sweat.