How accurate is that analyzer?

[chris91LX]

It said I had peak horsepower of 237 and an average hp of 255. I take this to mean I really need to get my driving skills down and better tracyion (I just got Nitto D/R's). It also said I should be running 13.7 in the 1/4 and my best so far, though I haven't gotten a really good run together, is 14.08 @ 99.26. Have you guys found the analyzer to be accurate and does 255hp sound right according to my sig.? Is that at the wheels or flywheel?

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91 LX 5.0
Z t-5, 3:73 gear, Vortech 73mm Mass Air, Accufab 65mm TB, BBK underdrives, Crane HI-6S Ignition, BBK unequal length headers, Bassani x pipe, 2.5" Dynomax Super Turbo cat back, Kenny Brown Super Subs, Factory Five Control Arms, Mac cold air kit and more to come!