chopsieze
Junior Member
- Joined
- Aug 12, 2017
- Posts
- 5
- Reaction score
- 0
- Ram Year
- 2004
- Engine
- Demi 5.7
I just got my aunt's 04 1500 with 5.7. It's bone stock with 190,000 and always been serviced by the dealer, seems to run strong. It had an exhaust manifold leak which I just fixed. She got 15-16 mpg driving all highway and said she always used 87 w/ethanol. Read it's tuned for 89... I never use ethanol and could mix 87 and 91 as no 89 is available w/o ethanol.
but...
Is there a tune for 87 or 91 that would help with mpg? Should I just reset the PCM and try a couple tanks of 87 then test with 91 and see what it does?
I usually get the manufacture numbers or better but not in this thing.
Is it just a guzzler?
but...
Is there a tune for 87 or 91 that would help with mpg? Should I just reset the PCM and try a couple tanks of 87 then test with 91 and see what it does?
I usually get the manufacture numbers or better but not in this thing.
Is it just a guzzler?
