hum. . .rich. . .I would say with that tripple setup he's running no less then 3-4 stages of giggle gas, and water meth just to keep EGT's down

second, he's probably around 80PSI of boost if not getting close to 90. by the time the exhaust has hit the third turbo theres not much energy left to light it up, hence the stages of giggle gas to get it to light.

all in all I would say he's only around 850-900hp, that is a pulling truck, not a race truck.