Hi guys. I've been lookig into getting a performance chip for my truck but im not sure which to choose or if thats the right direction. I drive my 1996 z71 alot more than I previously thought I would. I NEED to improve my gas mileage. I thought a performance chip might help. As a side note I'm not in need of any more horse power, but ill take it where I can get it. Money is not matter, so what are good options?