6.7L Cummins Forum

I don't know about anyone else but I'd never pulled my air filter out in over 19,000 miles so the first thing I have to say is this thing is huge!



The second thing is it sure looks like Fram orange to me.



Notice the flow ratings.



After removing it I was pleased to see that it did in fact bring in cool air from the fender well which made me wonder if maybe just an aftermarket drop in might have been an economical way to go rather then a full blown CAI but later I found out differently.



After getting the OEM filter box removed I saw this and the only thing I can figure is it is done like this to quiet the intake.



Regardless of it's purpose it is very restrictive and I'm looking forward to driving my 6.7L with the Volant tonight and hopefully it will be like the difference between night and day.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

Did you see any difference with the changes Squid?

I sure did, 100+ decrease in Engine Exhaust Temp and right now the Annunciator is showing 18.5 MPG average, a 3 MPG difference over stock and 2 mpg increase over just the Edge. So I figure I should be in the 17.5 MPG range when I fill up Wednesday and if so that will be better then what I got in my Nissan Titan.

I have the 4.10 rear end gear so I would venture an educated guess that a 3/4 ton with the higher gear would probably add another 1 to 2 MPG above that depending on driving style.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

Sounds like that might be my first MOd to the truck. I ran a K&N CIA on a 2000 7.3L Ford Super Duty and liked the difference it made. I just never felt the need to do it to the 5.9. I like the idea of doing something to get better fuel mileage and improve performance though.

Especially at todays prices for diesel then throw in the cost savings of not having to replace the air filter and the Mod will pay for itself in no time.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

So this is with just a filter change? Got a link to the best place to buy it. I could sure use some help in the mpg area.

I modified my factory air box into a cold air box. Pic and link below.

2007 RAM 3500 6.7L Cummins Diesel engine mods

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CUMMINZ NC
2007.5 CTD, QC-DRW 3500 BFT Laramie, Smarty S-67, AMSOil Dual-Gard Bypass, Custom Line-X 4x4, 4.10LS, 988s, 68rfe, MBRP 5", Mobil Delvac. Yukon free spin, 19.5x245 G647 Goodyear's - 2006 - 37RLTSD Cedar Creek-Day Dreamer
My 2007.5 DRW Truck at www.CumminZ.com

Great job. We did something similar on the Nissan Titan and I thought about doing that to my Cummins but I really wanted the Donaldson dry Filter so I went ahead and ponied up for the Volant. Now I've discovered that you can buy just the Donaldson Nano Fiber filter from Volant which makes your Mod interesting. Did you see any MPG increase?

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

I am wanting to do the same to mine. How did it work out? Any extra noise , better fuel mileage? How much space is left under the KN filter?

I replaced mine with and OEM filter (Balwin @ $72) There was about 1/4" of crud on the original filter at 20K miles. I am concerned with the K&N with the efficiency%.
CumminZ:
Have you noticed more road debris in the box with the hole in the bottom?

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07.5 3500 Quad, SRW, 4X4, Laramie, Leathered, Dark Metallic Gray, 6.7, 68RFE, 20K Reese, Ride Rite's, 2 Viair air compressors, Bully steps, Kleinn Locomotive air horns (5 in all), Billet polished locking fuel door, 'A' pillar mount Auto Meter Pryo, PML X-deep trans pan
06 Durango 285 RL 5'er Lifted by KZ