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Hi guys, new here.. Just bought a 2015 Ram 3500 Mega Cab, H.O. diesel, Aisen transmission, everything stock. The truck was ordered in Vancuver B.C., lived its whole life there until I purchased it. I brought it back to Pennsylvania.

I've been driving it and very dissapointed with the performance. This thing is an absolute dog. My comparison is my stock 2011 F-350 crew with the 6.7.

Everyone told me these Cummins were all that, but I'm not feeling it!

Any thoughts?

I was wondering could it be due to a west coast truck and emissions?

I'm not looking to build the truck, I just would want it to be like my Ford...

Chris
 

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Welcome to the forum.

If there are no codes and it’s all stock, it is what it is assuming no massive transmission slip, etc.

What exactly are you asking? You don’t want to do any modding (which I understand) but you want it to be different?

For what it’s worth no Cummins has never been a quick truck stock compared to the other major 2.
 

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Not going to happen. Stock for stock the Ford will always feel faster. Has to do with the V motor, trans, tuning, gearing, etc etc. Cummins gets such high praise do to reliability, ease to work on, towing performance, easier to build etc etc.
 

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Hmm, ok..

A couple of scenarios.

1. My daughter was in the new dodge, i was in the ford, I was travelling 55 mph. She was following me on a 4 lane highway, decided pass me. Once she got beside me, I have it the gas stayed beside her for a little, then pinched it and pulled away, big time.... We stopped to eat a few miles down the road and said she was giving the dodge all it had, couldnt come close to keeping up with me.

2. With the dodge, I pulled my empty 3800# dump trailer from my shop to office. Going up a 1.5 mile hill which starts at a stop sign at the bottom the highest speed I could get was 53.

In the Ford I need to let off the gas @ 80+ with the same empty trailer.

3. In general, compared ro the Ford, this is very sluggish.. Just trying to understand why there is such a big difference.


As to modifying the truck, I really dont want to do that as ive heard the horror stories that can happen with some and the continued adjustments and fine tuning.

I'm trying to figure out if anyone knows, could the horsepower be choked due to the emissions and regs due to being a west coast truck? Could this be more of a performer if I took to the local dodge dealer, had rhe ecm flashed to Pennsylvania standards?
 

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Hmm, ok..

A couple of scenarios.

1. My daughter was in the new dodge, i was in the ford, I was travelling 55 mph. She was following me on a 4 lane highway, decided pass me. Once she got beside me, I have it the gas stayed beside her for a little, then pinched it and pulled away, big time.... We stopped to eat a few miles down the road and said she was giving the dodge all it had, couldnt come close to keeping up with me.

2. With the dodge, I pulled my empty 3800# dump trailer from my shop to office. Going up a 1.5 mile hill which starts at a stop sign at the bottom the highest speed I could get was 53.

In the Ford I need to let off the gas @ 80+ with the same empty trailer.

3. In general, compared ro the Ford, this is very sluggish.. Just trying to understand why there is such a big difference.


As to modifying the truck, I really dont want to do that as ive heard the horror stories that can happen with some and the continued adjustments and fine tuning.

I'm trying to figure out if anyone knows, could the horsepower be choked due to the emissions and regs due to being a west coast truck? Could this be more of a performer if I took to the local dodge dealer, had rhe ecm flashed to Pennsylvania standards?
I’m pretty sure they haven’t had a different emissions tune like you describe since the early 2000’s.

It’s possible something is wrong with the truck but also possible that there isn’t.

Might be worth getting it looked at if you aren’t familiar with them.
 

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I would try taking it to a good diesel troubleshooter (dyno would be great) & see what he can find.
After that, its a tune & regear.
 

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Could be lots of things causing this performance deficit.

Ford's definitely accelerate faster, but your description of your RAM's performance does sound like it is off.

But, with no obvious issues showing like a CEL, we can't tell you much.

I can tell you that if you are flooring the throttle pedal on the RAM, that is not the fast way to go, about 3/4 throttle, max, is fastest.
 

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The ford will always be faster stock for stock. Sounds like your unhappy. I’d offload it asap
 

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Did you not test drive it before buying?

No difference in west coast trucks from any others these days. The "west coast" has infected the rest of the country with it's rules. Also emissions clogged will not choke the engine HP. If it was it would be throwing codes.

The Ford will be quicker unloaded or under a light load due to the V8 but put some real weight behind it and I think you will see the cummins pull better.

The truck should be performing better then what you describe so I would either return it to the dealer or at least have someone look it over before you start throwing more money into deletes and creating more potential problems.

.
 
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Discussion Starter #12
Thanks guys for the help.

I'm not interested in unloading the truck, it had a 90k new car sticker. Has all of the options that I wanted in a truck. Bought it for the options and the pedestrian reputation....

I'm not a brand type of person, but more of a (what options can I get)

I aggressively did research for the perfect truck, found it, and flew across the country to get it.

I absolutely love the truck as I have been wanting one since 2012 when the ram boxes came out, air ride, etc.., just very dissapointed with the performance, not what I expected or even heard about.

One of my friends bought a stock 2010 ram mega cab, I drove it frequently, as stock it was a performer, (certainly more powerful than my truck) nows he's dumped 8-10k into it and its an insane hotrod, especially in level 5, (im not wanting that)

I did test drive this truck, but its hard to get a real take on the drivability of my ford vs ram.
I test drove in Seattle Washington (where I bought the truck), I live in PA. I dont think there was any way to duplicate the type of driving I normally do on our rural PA roads with hills, using trailers etc. when driving in a very saturated city environment.

I'll let you guys know what I can figure out.
 

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I'd start with the basics. Check and make sure all your air induction clamps are tight and you don't have a leak in the system between the turbo and the intake valves.
 

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If in doubt, new fuel filters and have a good look at the air filter.
Any smoke when laying the pedal to it?
 

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If you cant get more than 53 mph going up a hill with a 3800lb trailer there is a definite issue. The Ford is definitely a quicker truck stock, but towing the Cummins outshines the Ford IMO. As was said previously, check the basics first, filters, air etc. Could be a turbo issue, but you should have codes associated with that. Have you checked stored codes with a scanner?
My opinion is that there is an issue with your truck, im basing that strictly on your comment about cant get over 53 mph with a 3800lb load. You should literally not even know 3800 lbs is behind that truck.
 

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Check the Ram active air system in the air box. It could be busted leaving both flappers closed.
I always remove the flapper from the actuator stem and reinstall the actuator so it doesn’t throw a code.
 

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Don't check the air filter, just replace it and eliminate that as even a possible cause. They can get clogged with fine pollen and look clean but actually be clogged. As for racing the ford, unless you both had the pedal to the floor cannot compare, and if you did have the pedal to the floor and were not going insanely fast then you have a problem. If you want it to drive like a ford, buy a ford. If you want to know if you have a problem find a dealer with a used one on the lot like yours and test drive it and compare the two. My 2500 cummins would get blown away by my Sequoia we got rid of and it has 250K miles on it. If I was looking for something with comparable speed off the line I would be extremely disappointed.
 

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Check the Ram active air system in the air box. It could be busted leaving both flappers closed.
I always remove the flapper from the actuator stem and reinstall the actuator so it doesn’t throw a code.
Do you remove the flapper to the fender only and how is it done?
 

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I can tell you that if you are flooring the throttle pedal on the RAM, that is not the fast way to go, about 3/4 throttle, max, is fastest.
That's right, right there.....get that t converter locked and roll into that throttle to about 3/4 and as that boost builds, its a freight train!
 
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