I guess I got to lighten the lead foot up alittle bit... LOL, especially with the $1.10 per litre gas price in my neck of the woods right now.
Still amazed that my buddy gets 700km to a 92L tank in his 08 Silverado 4x4 with the 5.3 V8.
Ya know, not that I can endorse it or anything, but Hypertech has new product out called Max Eco. A programmer that does tire size, axles, shift firmness etc etc but with the tuning part is geared to maximum fuel economy with reg fuel. Not a performance based product. I think thats what someone told me anyhow