CK5
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Zimmers 06 LLY
- Thread starter 76zimmer
- Start date
I figured the Duramax would get better than that...? Seems way lower than it should.
When I went out to get my CC K30 from Eric, my '15 Silverado half ton with the 5.3 averaged 12.5 towing it home. A trailer of 9800# through Yellowstone and the mountains to the east of it. Then 70 mph into the wind across SD.
Think I'd definitely do some upgrades.
When I went out to get my CC K30 from Eric, my '15 Silverado half ton with the 5.3 averaged 12.5 towing it home. A trailer of 9800# through Yellowstone and the mountains to the east of it. Then 70 mph into the wind across SD.
Think I'd definitely do some upgrades.
There are two kinds of diesel owners, one group who doesn't get as good of mileage as the other group, and liars.
Martin
Martin
My 7.3L super duty dually gets like 13 empty. No idea towing, probably single digits as it weighs like 23k with my 5th wheel and I am usually going up 6% or worse mountains. At least it has a 35 gal tank LOL. Those Duramax Chevys got hosed with the little tanks.
I know that having the speedometer corrected for the tire size has an impact on the actual numbers.
My son has an '03 without EGR, (federal emissions), an 80 HP tune that burns very clean, and 3:73 gears. He can go 10K on oil changes and the oil isn't black. Schaeffer's full synthetic. He has 4" exhaust from the down pipe back with a medium length muffler.
We went to Denver and picked up a wrecked '00 1/2 ton on a steel tilt deck trailer. It got 16.3 on the trip back from Denver loaded. That was calculated mpg. Definitely less wind drag than the camper.
My son has an '03 without EGR, (federal emissions), an 80 HP tune that burns very clean, and 3:73 gears. He can go 10K on oil changes and the oil isn't black. Schaeffer's full synthetic. He has 4" exhaust from the down pipe back with a medium length muffler.
We went to Denver and picked up a wrecked '00 1/2 ton on a steel tilt deck trailer. It got 16.3 on the trip back from Denver loaded. That was calculated mpg. Definitely less wind drag than the camper.
Yes, it has to be corrected in the ECM.
The actual tire measurement is better than the tire size.
The guy who did my son's truck is no longer doing them because of wherever he is working now. But he did a great job when compared to a previous tune. The guy said that he did some things that lots of people simply ignore. I don't know exactly what, but it doesn't smoke much, fires up very crisp. It's all that the stock transmission will take, and requires tow/haul for much weight on the passes. The kid put it in limp mode once because he forgot to push the button!
He said that sucked to go from 60 mph going up Vail, to 25ish, before he could get to a spot to reset it.
Took a trip to Detroit today, avg. 18.0 for the 283 miles including calculating the mismatched mileage (2%). Mostly highway 72-73mph on cruise, when traffic would allow. About 40 miles rural driving on backroads. Tires (265/75) at 70#, truck was empty, save for a set of tires/wheels in the bed. So Im fine w that, but towing mileage sucks balls. Could the exhaust be the culprit tanking the towing mileage?
It could be a combination of intake, exhaust, EGR and wind resistance. EGR is not good for performance of any kind.
Right on that…..Ive Been reading about the fingerstick, or just a block off/delete, but some say they throw codes?
I really don’t want want a loud droning intake or exhaust system, as it just gets annoying after miles on the road. Truck is decently quiet now, its nice to carry on a conversation at times (Dont have a wife that needs blocking out…lol).
I really don’t want want a loud droning intake or exhaust system, as it just gets annoying after miles on the road. Truck is decently quiet now, its nice to carry on a conversation at times (Dont have a wife that needs blocking out…lol).
My son did a Banks air filter/ cold air system. Stock '03 mouthpiece. I don't notice intake noise, but I have been around class 8 trucks for over 30 years.
He bought Diamond Eye 4" exhaust. He tried it straight pipe and found out that as soon as he hooked to a trailer and increased the load at all, drone started to happen in the cab. (Extended cab, 8' bed) I believe that he got a Magnaflow muffler and it is just right.
He bought Diamond Eye 4" exhaust. He tried it straight pipe and found out that as soon as he hooked to a trailer and increased the load at all, drone started to happen in the cab. (Extended cab, 8' bed) I believe that he got a Magnaflow muffler and it is just right.
I put same exhaust on mine , need to check into that muffler.
I will try and remember to double check with him about the length, and brand.
Kick me in the shin if I forget!
He just sent me this link.
I remembered the wrong brand.
I remembered the wrong brand.
I hope that brings up a 4" diamond eye muffler.
It does.
I've done a couple magnaflow diesel exhaust systems and I really liked the quality and the way they sounded.
I got pro flow 4”” on our 2012 duramax it drones a bit but nothing too bad. Never hear it with the radio on.
Sounds awesome from the outside!
Sounds awesome from the outside!
