I was: stock bottem end, ported head, ems, crane 12's untuned, ported intake/exh manis, 49lb crap wheel, mpx intercooler, all hard pipes, 750's, bnf, walbro, return line...tuned by aaron
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The purpose of ignition advance is to account for the lag time following spark ignition for combustion pressure to peak at 15 degrees AFTER TOP DEAD CENTER. A little fyi  ! |
