If your happy with its perf. who cares what ANY dyno tells you, just a waiste of $$$ IMO, I never use them & never will, just take it to the track & tune there, thats "real world".

If i had a $1.00 for everytime someone ask me how much HP i was running in my duster i'd have a pocket full of $$$ & would pay for my entry fees each time , I would always tell them "enough to run 10s" LOL, it runs good & i'm very happy with it & thats that .

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU