505CI Twin-Turbo Pontiac Engine - Twin-Turbo Tail Twister
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Here's where things go off the charts-literally. We poured in some C16 racing fuel, upped the boost from 13.4 to 17.7 psi, and quickly pegged the needle, so to speak, on the dyno. The reason the left side of the torque graph is flat is because it is up against the upper limit of the dyno's measuring ability. Peak power also occurred about 1,000 rpm lower than with pump gas-mostly because of greater boost coming in earlier. Because of the different burn rate with the C16, the fuel and timing tables needed some tweaking, but they were saved and can be loaded any time Hutchens is feeling bored. View Related Article
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