Yes. I've had one for years. Just used it for the first time in the GN. I got 6.4 0-60 I feel this is fairly accurate since i can only run about 10# boost, and cannot attain WOT without detonation. So, i'm using this as a bench mark, and will see what effect any changes i make have. Anyway, do a search here on the site for them. They seem to have been well used and reviewed with good results.