I have come to understand that in Ca the 2008 4.7l engine is a bit of a white elephant. I was hoping to use some bolt ons to buy back some mileage but as i have found out and noted in other threads in the 4.7 forum the CARB certs are not forth coming.
My question for the group and why i have posted here is the following. My understanding is that i will have better opportunities for gas mileage if i can find one of the 5.9l 04-06 i would be in good shape for roughly 20Plus mpg.
Now to the question.
Should i make the jump to a diesel either a 5.9 or a 6.7 or shall i instead drop the 4.7 and go for a 5.7l ram 1500 and do a bunch of the bolt-on's that are CARB approved?
The reason I'm looking at this is mainly as a mileage increase option and the diesel is appealing in that the engine will effectively out last the truck and i can get a pretty consistent mileage as well as the option for alternative fuels.
any and all commentary is welcome.