Originally Posted by vega34
not to steal the thread,but i don't like the rpm in the mega450 at all,i tried the rpm in the 450 this weekend and was not happy,,,i had the rpm on 6600 shift and before it shift it was hitting the 7000 overall chip,then when i got back to pit and read it,it said it only hit 6800 rpm,,something not right,i think the rpm in the mega 450 is a little off and behind the actual rpm tach,,i moved it around and never felt good about it,,it just don't seem like it shifts right using the 450 box,,i rather have my rpm act.switch back LOL,,,steve
The box was initially set to shift on RPM but after the first run I changed it to shift on time (1.7 seconds for run #2 and 1.85 seconds for run #3). I will leave it that way and check the tach to adjust it further, if neccessary.