Most of the time in a NA engine if you making more power then you are burning more fuel. The factory engineers have already made these NA engines as fuel efficient as possible. Any modifications made now are using more fuel to make more power.
As for a 3.92 gear all its going to do shift where...
If I was you, I would run a compression test and verify all cylinders are where they should be. While you have the plugs out see if any look abnormal and replace with new plugs. Then I would run a can of seafoam through the intake, several YouTube videos on how to do it properly. The hemis PCV...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.