The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Post your engine performance mods and HP/MPG gains!!!

Steve Cole · 08-20-2016, 11:01 AM

Thanks for the replies! To answer your question, I am just tired of not being able to drive past a gas station without stopping! I really baby it, easy on and off the accelator but am only getting about 13.7 mpg and most of that is highway driving. I put a low profile bed cover on it already and was hoping that with a free flowing header/exhaust system, computer re-tune for mpg, and possibly a aftermarket CAI/ air filter I could get close to 5 mpg gains but after reading your replies, I am seriously doubting that now. I guess I should have gotten the 4.8 instead. Oh well, I will make the best of it. Thanks.

08-20-2016, 11:01 AM	#4
Steve Cole Registered User Join Date: May 2012 Location: Faith,NC Posts: 1,623	Re: Post your engine performance mods and HP/MPG gains!!! Thanks for the replies! To answer your question, I am just tired of not being able to drive past a gas station without stopping! I really baby it, easy on and off the accelator but am only getting about 13.7 mpg and most of that is highway driving. I put a low profile bed cover on it already and was hoping that with a free flowing header/exhaust system, computer re-tune for mpg, and possibly a aftermarket CAI/ air filter I could get close to 5 mpg gains but after reading your replies, I am seriously doubting that now. I guess I should have gotten the 4.8 instead. Oh well, I will make the best of it. Thanks.