97 Silverado 5.0 performance chip question?
I just picked up a 97 CK1500 with the 305 in it. I was contemplating getting a performance chip (not a tuner) to try and squeeze a little more horsepower, but more importantly, MPG's seeing as how I drive about 100 miles a day to work and school. My concern is that the truck has over 200k miles on it. Granted, it has no ticks, delays, and shifts right when it's supposed to, and doesn't lag at all. My main reason for the post was to get some feedback from you guys that may have used a tuner or chip on a high milage vehicle and could point me in the right direction before I do something catastrophic. Thanks in advance for all of the info guys!