Limits of the 4.8 are dependant on multiple factors. With twins you could get 1200 HP as proven by a magazine (name escapes me). As for N20, I would feel safe on a 100 shot nozzle, 150 with a spot on tune, and maybe 200-250 on a direct port setup with its own fuel supply and a good tune. All that said, I'm not spraying but I intend to in the near future while I'm building another engine for forced induction. Do some research and plan what you want to do. Just remember, you can only have two of the following: fast, cheap, and reliable.



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