No one needs to do anything....how much longer are we going to beat this dead horse. There are at least 50 threads on here about this very topic. I have friends with 185, 181 and I have a Code 3 pulley. We all have intakes, tunes and can drive. All three cars ran 12.2 on the same track, on the same day....there is no better test than that.

Each car in each part of the country will react a little different due to altitude, but until someone can tune these cars...on the road..not on a dyno, the 181 and 185 will not be faster than the Code 3...at least in TEXAS.