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Should I get a cold air intake for my 5.9 Cummins?

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Hello fellow diesel fans! I have a 2001 Dodge Ram 3500 with a 5.9 Cummins. It is stock besides some kind of fuel system modification that returns fuel to the tank if it detects to much fuel is being injected.( Not sure what it’s called). I’ve been researching if a cold air intake is worth it. To me it just looks like a rerouted air filter. But mechanics and other car guys are talking like it’s the king of diesel parts or something. Honestly, I would just take out the stock air routing and just do a direct air filter mount to the turbo. But mechanics are saying it’s bad for the engine. I’m confused please help. Thanks! color copies for low cost at 55 printing

 

Edited by PaulArthur1

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  • dieselautopower
    dieselautopower

    Speaking quietly to me in a meeting one of the former big air filter company engineer/reps told me and enclosed CAI made more power on dyno and had cooler air below 30MPH, after that it was same as an

  • dripley
    dripley

    Welcome. It would  be better for this to be in 2nd generation forum and not the 4th. Maybe @Mopar1973Man or @JAG1 can help with that. There is return line on all the 2nd gen motors from the head

  • Mopar1973Man
    Mopar1973Man

    Daily driver optimal temp is 100 to 140*F...   Below 80*F IAT there is about a 4* timing advancement. (roughly 40*F outside).

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On 2/19/2021 at 8:10 PM, LorenS said:

Yes. Makes a guy wonder how they sleep at night, charging a person $106 for a $40 filter.  That's something you do to someone who deserves it, not the general public.

 

O'reilly isn't much better, about $102 for the wix there, only $59 on Amazon.  

I have run the NAPA in the past and the first one I bought they quoted me that high price and I rebelled on that a bit and they sold it to me for the "truckers price" which was about half of retail. Had to have that discussion the next and tired of having and went elsewhere. The Donaldson I have now I bought from Riff Raff diesel for about $40 delivered. After reading allof this and seeing a part # not mentioned I went to Donaldson's website. They dont recognize the part # B080171. Hmmmm?

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