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3rd Gen Engine and Drivetrain -> 2007 and up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Increase Mileage 25%!!!

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Old 02-08-2008, 01:54 PM
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I wonder if I take the bell off a tuba and put it on the front of my truck and run it into the airbox if that would help my MPG's??
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Old 02-08-2008, 02:53 PM
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What were the specs printed on the stock 6.7 filter?
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Old 02-08-2008, 03:46 PM
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Originally Posted by jkitterman View Post
What were the specs printed on the stock 6.7 filter?
ask and ye shall recieve

53034051ab 101707y2 made in usa dust cap. 775g max airflow. 800 cfm eff99% pressure loss @ max flow 10" rise.
BTW, the new filter is over 4" deep!!! just measured


Scotty, when you gonna hook us up for these 6.7 liters?????

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Old 02-08-2008, 04:39 PM
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Originally Posted by Hayseed View Post
I wonder if I take the bell off a tuba and put it on the front of my truck and run it into the airbox if that would help my MPG's??
Just make sure you oil the tuba flange first...the road salt will destroy that thing in a few days and it would look like the bell off a clarinet. Try duals. Better yet, run one through the hood and have an intake/velocity stack.


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Old 02-08-2008, 06:43 PM
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I'm not accepting you get that kind of MPG increase just by changing from a 6.7 to a 5.9 filter.

What about all of the folks who have put the very high flow after market filters on? They all consistently report an increase in turbo and EB sound levels, but little or no difference in MPG and little difference in performance other than possible crisper throttle response.
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Old 02-08-2008, 08:33 PM
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3800 miles later - truck has not blown up and mileage is still WAY better than it was.

Laugh all you want......then try it.
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Old 02-08-2008, 09:53 PM
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Originally Posted by myfirsttruck View Post
3800 miles later - truck has not blown up and mileage is still WAY better than it was.

Laugh all you want......then try it.
no one expects it to blow up.

I'll run a couple tanks with a 5.9 filter if I ever get my truck back.
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Old 02-08-2008, 10:18 PM
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Man, ya'll are tough on this guy. He throws an idea out there & ya'll beat him up about it.
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Old 02-09-2008, 12:45 AM
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I think its a great idea... I'll wait it out though. I have no choice, my truck aint even assembled yet - still waitin in saltillo
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Old 02-09-2008, 12:51 AM
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Originally Posted by nfsommer View Post
i fell off my chair when i saw this thread
laughter sounds
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Old 02-09-2008, 12:14 PM
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I agree, way too quick to say it isnt true! we are all looking for ways to get better fuel milage out of these 6.7s, so lets work together to make the trucks better. Milage per gallon on these trucks is going to differ because of the way we drive,terrian ,4.10 vs 373, auto vs stick ect.... just my 2 cents worth!!
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Old 02-09-2008, 12:24 PM
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5.9 vs 6.7 filter

My opinion. They put a different filter in the 6.7's to trap more of the dirt/etc that gets sucked in. In severe conditions the 5.9 stock air filter was way to liberal in stopping dirt. A friend of mine (cotton farmer) had Dodge warranty his dusted 04 5.9 with a little less than 100k miles. He used Wix air filters and changed them every 5k miles, had proof of purchase for the filters and Dodge covered it.
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Old 02-09-2008, 04:07 PM
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Hey,I just traded out of a 2001 GMC 8.1 voretc w/ allison and 4.10 rear..... I think the mileage is great compared to 8 and 9 not pulling and 5 and 6 pulling a 40' toyhauler. I get about 15 to 16 mpg not pulling,,,,,, Looking forward to putting the trailer behind it to see what I will get.....


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Old 02-09-2008, 06:27 PM
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Originally Posted by westexhunt View Post
A friend of mine (cotton farmer) had Dodge warranty his dusted 04 5.9 with a little less than 100k miles. He used Wix air filters and changed them every 5k miles, had proof of purchase for the filters and Dodge covered it.
elaborate on "dusted" please.
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Old 02-09-2008, 09:17 PM
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i am willing to try this. i thought the 5.9 and 6.7 used the same filter though. is it an earlier 5.9? can someone post the part # for the 6.7 and for the 5.9(the one used for this)? thanks.
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