Hey allen,
I wish my truck got that kind of gas mileage. With the 80-e in it, my 5.3 is just sucking down the gas. I checked my gas mileage the other day when i filled up, and according to the numbers, i am getting an unimpressive 10.4 mpg. i think i drove 241.8 miles around town on that tank. Any ideas??? Before i put in the 80-e, the mileage was a lot better than this. I didnt think it would have made that big of a difference.
Matt in california
2000 Silvo 5.3L, 4L80E, 6" Fabtech lift (bad idea) , 33's, K&N, Gibson headers, Magnaflow Exhaust, HD Hood, JBA plug wires, 4.10's w/auburn posi, radix'd