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No prob--that's why we post. Deleting the EGR has to help. same with freer exhaust and having the correct tire pressure (and tire size). Maybe the zoodad is a question mark (never done it, nor personally know anyone that has) but friends with psd's have seen measurable mpg increases after dumping the egr.
No prob--that's why we post. Deleting the EGR has to help. same with freer exhaust and having the correct tire pressure (and tire size). Maybe the zoodad is a question mark (never done it, nor personally know anyone that has) but friends with psd's have seen measurable mpg increases after dumping the egr.
If the egr system is working properly I don't feel there will be a measurable difference. I can and have gotten over 20 mpg on the highway empty and really doubt that eliminating the egr would improve on that! 70 with cruise on.
No prob--that's why we post. Deleting the EGR has to help. same with freer exhaust and having the correct tire pressure (and tire size). Maybe the zoodad is a question mark (never done it, nor personally know anyone that has) but friends with psd's have seen measurable mpg increases after dumping the egr.
I did the ZooDad back in Oct. '08; if there was any improvement it was minor. I don't have a pyrometer to prove it...but those that do claim the ZooDad lowers EGT in traffic. I did notice a 1 to 1.5 mpg improvement when my kitty fell off the truck last month. Staying of the skinny pedal is the best way to improve MPG.
On my 2004 F350 crewcab long bed dually, I got better than 20mpg on one long trip to north GA and back. Previous best mileage 17mpg. The only difference was instead of the tonneau cover,I had removed the tailgate to haul a heavy piece of equipment to GA. I was running 65 mph. One way loaded with a over a ton worth of machine. The 20+ was an average for the whole trip. Your mileage may vary as they say, if you have a different body style. I put a topper on the truck and lost 1/2-1 mpg back to 16mpg.
I do keep a logbook in my truck. I have recorded every fill-up and mileage since the truck was new. I try to make an entry every time I drive the truck.
Might need to try that mod.....does it include high centering and finding a buddy to pull you off??? But seriously....I might do that...remove the cat that is! Thad
The Pavement Princess doesn't leave paved roads...except for well packed gravel parking lots. Other wise she sinks and it's a bear to get it out of the whole she'll dig for her self. I did a kitty delete using the exhaust off a '00 7.3L....looks like a stock truck because everything matches under there.
Also depending on what part of the country you live in will play a part on your fuel mileage in the winter. In the winter my average rural driving gets me about 15 even when using a cetane booster. Come summer that figure goes up to 17+ but on the interstate I get 20 running empty. Make sure your tires have the proper air fill.
The Pavement Princess doesn't leave paved roads...except for well packed gravel parking lots. Other wise she sinks and it's a bear to get it out of the whole she'll dig for her self. I did a kitty delete using the exhaust off a '00 7.3L....looks like a stock truck because everything matches under there.
What did your cat look like when you removed it. They typically have a lot of open area. Because of that I am quite surprised that it had a noticeable improvement for you in mileage. Certainly not challenging you, but I have heard many that say they saw no benefit w/ the removal of their cat. The stock muffler is quite a bit more restrictive than the cat.
What did your cat look like when you removed it. They typically have a lot of open area. Because of that I am quite surprised that it had a noticeable improvement for you in mileage. Certainly not challenging you, but I have heard many that say they saw no benefit w/ the removal of their cat. The stock muffler is quite a bit more restrictive than the cat.
You could make out daylight through the core...but that's about it. It wasn't plugged in any fashion, but I removed it to help drop the EGT (when towing) and I knew it would make the turbo louder. It was a cheap exhaust mod ($20); my future plans for the truck are a true 4" turbo back with no cat and less restrictive muffler....but there will be one just to keep the peace with my neighbors. I've only run 3 tanks through the truck since the mod and the hand calculations have been a mile to the gallon higher. I'd like to make a long road trip (more than 200 miles non-stop) to see how everything stacks up.
Originally Posted by Mrfun2fly
Whats a Cetane Booster?
I'm no diesel tech, but the best way I can explain cetane is the willing-ness for the fuel to burn. The higher the number the better. Cetane booster is to a diesel like octane booster to a gasser. There are several different brands. Most agree that Stadyne is the best; I run Diesel Power Service through my truck (white in the winter for anti-gell; gray at all other times); Ford has their own out there...but like everything Ford, it ain't chap.
I'd love to see 20 MPG on the highway on my '04. Unloaded, with a light foot, the absolute best I've ever calculated was 17.4 and usually around 17.1.
It's a big, wide, tall truck weighing three tons (you big dogs are four tons!). Unless the laws of physics are repealed, nothing I've seen makes much difference.
Mine weighs 4 tons and I also have seen very little difference in any improvement I have tried to make. I have seen 20 mpg on a couple of highway trips, but the wind was with me!