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Anyone know if the readings are anywhere near accurate? ie: have dyno'ed your car and run it vs the Gtech? Also would the HP rating be RWHP or is based on HP at the crank?
 

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I have both the Pro and now the Competition unit. I haven't tried the Competition unit yet, but most people are reporting it to be pretty accurate. I used the Pro unit with an all wheel drive car, so I couldn't actually dyno the car, but the readings seemed reasonable, were repeatable and pretty much tracked my expectations as I added mods. Doing an easy launch and then a hard run to redline in 2nd gear seemed to give me the most repeatable readings.

The horsepower is reported in RWHP.
 
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