Trey Hardy
8” fabtech icon coilovers uniballs 24x14on35/15.50
You know you wanna sell that Whipple to me
Does she have the 3.42 gears in it or 3.73s?
14 tahoe 4x4 poor fuel mileage help
- Thread starter dirtymax6610
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Does she have the 3.42 gears in it or 3.73s?
petethepug
Michael
First off, the larger rims & tires require more energy to get them up to speed, like city driving. The part that was left out is milage that high can only be pulled off with highway driving.
The motor and trans are new and tight. Give it a little time to break in. Check those fuel trims, o2 sensors & cats.
Only use OEM/ac Delco o2 sensors from known, trusted retailers to avoid the counterfeit overseas parts.
Congrats on the major refresh of the truck. Just take the diagnostics a bit at a time. If not done yet consider an engine trans tune from black bear
The motor and trans are new and tight. Give it a little time to break in. Check those fuel trims, o2 sensors & cats.
Only use OEM/ac Delco o2 sensors from known, trusted retailers to avoid the counterfeit overseas parts.
Congrats on the major refresh of the truck. Just take the diagnostics a bit at a time. If not done yet consider an engine trans tune from black bear
ivin74
05 NBS Nali
I'm not sure what the spec's are for that cam but from experience a cam, tune and dod delete will get you worst milage than before. I have never heard anyone get 23 mpg on a 6spd tranny. My stock yukon on 32" tires gets 13mpgs. So 12.5 with your set up is about the best you are going to get.
houstontaylor
Member
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Could you be using high alcohol content fuel? That would cause a drop in mileage.
Marky Dissod
Full Access Member
A recent transition from E10 to E15 could have been inflicted upon you without your knowledge.
so I saw a suv on tires yesterday and it made me think. is your speedo calabrated for the larger tires? most don't, simple with hp tuners. my yukon with stock tires read 2mph off, so I adjusted it.
if not that effects you're odometer reading too.
if not that effects you're odometer reading too.
opfor2
Full Access Member
The best I recently got was 19.5 MPG, which was all highway driving from Riverside County to just north of Vegas. Very impressed for a stock Tahoe
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