Dyno 2: On the torque side, the system showed a 12.5 lb-ft increase at the wheels. We were again perplexed by the engine's air/fuel-ratio readings. Despite a substantial gain in power, the ratio worsened, dropping off the graph (below 10:1) from 4800 rpm to the end of the pull. The silver lining? At least our injectors aren't maxed out.