i need some opinions
im putting an s60 in my car with 373s in about a week or so....also in about 6 months, i will also be dropping a new ls3 or something in my z28 as well.......should i put up with the speedo being off for that amount of time....or should i get a full out tune as well as get it tuned to work with my 373s......about how much will this route cost, and how much power will i gain with a tune on a stock z28 M6 car?
heres number two......
i may also be getting a 200 mph gauge overlay from 6 litre eater in about a month......would it be best to just wait completely to do my new tune for the speedo until i get the overlay?
thanks





