Looks like it may be tuned for 22 degrees of timing in high gear or all gears. Burned for use with 36lb injectors. The "NOS" could have something to do with nitrous oxide. The "GWS" may be who made it.
X 1,000,000. I learned the hard way trying to figure out what chip I had and trying to lean on the tune. Start off on the right foot with one of Erics chips. Only way to go: