The final tune from 0-5400rpm was leaned out, 5500-8000rpm fuel was richened up, and VTC was retarded about four degrees in the mid-range, and VTEC crossover was lowered to 4000rpm. Dropping the VTEC crossover point helped a lot.
Next, was trying the 70mm Blox
throttle-body. The engine had time to cool off during this time, as it was a hot day, close to 94 degrees ambient. Once on, the first couple of runs showed signs of running rich, probably because the engine was semi-cold. Once warmed up there weren't any significant gains and approximately 1-3hp was lost throughout the whole powerband. Erick performed some more tuning with the Blox t/b but was unable to surpass the power made with the 64mm t/b, though, the power made was very close to what the 64mm t/b produced. View Related Article
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