Please Help!

[Cbarnett1]

Alright here it is...... I have a 2010 crew cab Silverado 4x4 with a level and 285/65/18 tires. the truck has the 5.3 and 3:08s. I knew that once i put the level and tires on it the fuel mileage would decrease. I filled up my truck yesterday and pulled my 12 ft utility trailer which weighs probably 900 pounds and my Polaris 4 wheeler which weighs about 700 pounds. I drove 220 miles on all highway and burned an ENTIRE tank of fuel. Is there anything I can do to combat this? Ive heard a little about black bear tune but havent really done much research on things yet. Any suggestions??

[Stevens03]

Well since you haven't done anything for the increase of tire size, your speedo and your mileage is off and reporting wrong mileage. That being said, Blackbear custom tune is one of the best and can adjust for both tire size, shift points, rev limiter, speed limiter and much more.

 

You won't see a huge improvement but you will see an improvement. I'd highly recommend it.