It's 3 years old. Excellent shape other than the fact I don't have the original box it came in. Yes, it's amazingly accurate. The important factor in how well it works is making sure you have the correct weight for your vehicle entered in the G-Tech. My car WHP dynoed at 306. G-tech said 297 WHP. 1/4 mile times with G-tech showed 12.85 sec. Track slip showed 12.68.
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