I just purchased a G-tech Pro and the 0-60 and 1/4 et's are perfect.. But i was wondering about the HP rating. We fallowed step by step on how it said to do it, But the numbers dont seem to match up. We have ran several cars including.. 94 z/28, 97 328, 2001 LS V-8 among many more. The HP ratings dont seem accurate at all and seems very inconsitent. Are we doing something wrong? or is my G-tech screwed up? Thanks guys.