There's gotta be more left in it. Defiantly makes clean power though :thumb:
I would think you could be in the 6 to 650 range with sticks and a dual fueler
i was there that day and got to see jays 621 horse tt cummins, thought the bigrig turbo was wicked sickk in the cummins too. there was also a 4bt dakota, procharged cobra, and some others