05 2500 Cummins, need better gas milage
08-30-2009, 12:55 PM
#21
Staging Lane
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i have an 05 2500 just the same as you do i had the stock 4 inch exhaust straight piped everything was gone cat and muffler and have a k&n intake with an afe filter and a bully dog power pup on the economy setting i was seeing 19 - 20 and on performance i was seeing 21 on the interstate at 70 now granted the 4" straight piped wil sound like a civic with a beer can muffler and i hated it so i know have a full 5" turbo back
09-05-2009, 06:55 AM
#22
Staging Lane
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Location: CC, Texas
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Ok, picked up the 6637, that thing is huge! I just need to remove the airbox and clamp it to existing intake tube? I ask because it looks like the piping connecting to the airbox is that corragated/flex tubing?
-SS
-SS
09-06-2009, 11:40 PM
#23
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Scott
09-09-2009, 07:11 AM
#24
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Thanks, otherwise I'll wait to install it. I removed the white, plastic. airfoil from inside the last elbow before the turbo. I also tried spreading the tube/hose that connects to the airbox and putting the 6637 inside it. It fit, but wasn't very rigid, secure. It also hits the hood a little it in that position. Thanks!
-SS
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09-09-2009, 02:54 PM
#25
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Thanks, otherwise I'll wait to install it. I removed the white, plastic. airfoil from inside the last elbow before the turbo. I also tried spreading the tube/hose that connects to the airbox and putting the 6637 inside it. It fit, but wasn't very rigid, secure. It also hits the hood a little it in that position. Thanks!
-SS
-SS
Scott
09-10-2009, 01:03 PM
#27
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10-08-2009, 07:44 PM
#28
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I found a thread on CF showing how to mount a 6637 on a 3rd gen Cummins.
http://www.cumminsforum.com/forum/3r...t-my-bhaf.html
Scott
http://www.cumminsforum.com/forum/3r...t-my-bhaf.html
Scott
06-11-2010, 01:10 PM
#29
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I would have to say that another way to get your mileage up if you do alot of mixed driving or pulling is to get read of the bigger than stock tires..
A very good friend of mine (also a cummins technician at their Tech center) has an 05 and picked up better than 2MPG by going from some nitto grapplers to the stock sized michelins.. Now he has the michelins on all the time and switches to the grapplers if the snow comes on..
Trust me, some better easier rolling tires will definately help something that heavy..
A very good friend of mine (also a cummins technician at their Tech center) has an 05 and picked up better than 2MPG by going from some nitto grapplers to the stock sized michelins.. Now he has the michelins on all the time and switches to the grapplers if the snow comes on..
Trust me, some better easier rolling tires will definately help something that heavy..
