Slow RSA

I'll agree with the aftermarket intake and EGR delete. My 08 F350 does 20-22mpg all day long at 65-75mph empty. towing an open trailer w/ car and spare tires/wheels, jacks, tools, etc I am around 16/17mpg on flat ground, 14/15mpg in the TN/GA/NC/SC hills, both at about 75mph

Viperbob1

Pull the cab? Really? What are you talking about? Doing any intake, head, turbo, exhaust, etc work is VERY simple and straightforward. I Installed ARP head studs in a couple hours. And going from 14 to 22 MPG took all of about $1300 and maybe 8 hours of work. Not a bad investment return.

rlm328

If something goes bad due to your air intake, chips, etc and you have to do something major to the diesel engine you will be into a major repair from the get go is what I mean. There is a sticker on my intake that states any change to the engine or ecu voids the warranty. New diesel engine is in the 12 to 13 k range.

Viperbob1

An air intake is not going to hurt a dodge diesel. Tuners can be an issue, but worst I have seen with people being stupid and boosting too high is a blown head gasket. No one I know, or any Forum I have seen has talked about replacing an engine. If you check, the worst you will find is the transmission (outside of the new Aisin) is the weak link.

ExMB

Pulling the cab? Watcha talking about Willis?

I believe the 2008 Dodge (that he might be addressing in his post) is already out of warranty

TXE36

There isn't enough clearance to pull the heads with the cab in place after the 7.3s. It may even be necessary for the 7.3, but I don't think so. With the EPA requirements, there is a lot more crap attached to the 2003+ Ford diesels.

One of the reasons 6.0 and 6.4s are so cheap is either fixing them or bulletproofing them is so expensive - it's better just to buy a 7.3 or a newer truck.

I had a test ride today in a 2012 F250 6.7 with a car on an open trailer very similar to mine. That rig accelerated better than my Expy unloaded. However, it also road like a truck. Not terrible, just a lot more trucky than the Expy which rides like a luxury car.

-Mike

RickBetterley

I have an F250 diesel crew cab long bed. Yes, it rides like a truck, especially running light.
But it's a LOT better ride than the 2008 and 2003 dually I had before it.