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Would I rather it get better mileage, sure. Do I care, not really. I've had GM's and Ford's and neither of those trucks had an exhaust note as healthy as this truck (yes, I do have an aftermarket muffler on it). And for a big truck, it handles and rides very well. It is also more comfortable too.

Right at 14K miles, average is dead on 13. I have inputted every fuel up since I bought it. Worst was 11.9.

I put a solo performance MR400 on last week. I like it. If you get in it, it's pretty lively. Just normal driving it rumbles. At highway speeds (55-60) it has a very slight drone to it. Above 60 it is quiet.

I just installed the Solo Performance MR 400. Nice rumble and not loud while cruising. Very little drone around 58-61 and none at speeds above. It is loud if you get into though but it sounds right to me.

Thanks for all tips guys. It took about 25 minutes total once I had a game plan. Lol

Did you have to take the tailpipe off?

Yep. But I was kinda try to keep it intact. Lol But it is definitely an option at this point.

Can someone please give me some suggestions on removing the stock muffler on a ‘20 2500? I’m trying to install a solo performance muffler but I can’t get the stock one off!!! Lol

How do I reset and what am I resetting? Calibrating the blend doors?

Same here too.

If I put my fan speed on any speed lower than 5 on a hot day, it is pointless. Once the cab is cooled down, I can sometimes lower it to 4. To me the fan speed has too much of a percentage increase/drop between speeds. Also, my defroster leaks air by, the windshield condenses in the mornings and...

Check the batteries. I had very similar issues to yours, had one bad battery. Replaced both batteries and all issues stopped.

I agree that the 2-3 shift just sucks. My A/C only gets to 56*-58* out of the vent. It was 45* the other day and I had the A/C on max cool and it took a pretty long time before I even felt that I needed to adjust the temperature up.

Does the Magnaflow have a deep sound?

Just tested my a/c. It’s 53* outside and the vent temp is 56*-58*. But my build date isn’t in this TSB.

I'm between the direct fit magnaflow and the solo performance MR400.

Wow. I thought I was crazy. But I put my truck in 4 hi the other day and after I put it back in 2 WD, I could swear I could hear a whine coming from the front end. I have not really thought about it again since. It may have quite or I just do not notice the sound anymore.

I messaged Ram Care to find out if they could tell me of any changes to the Hvac system. What I got in response was that my system had a different code from the ones in the TSB but was unable to tell me if anything had been changed in the HVAC system to these build dates past July 2020.

On another forum, some people have posted that the dealer ordered the parts. Now, what does that mean? Who knows. LOL

Does anyone know if these Doug Thorley headers fit without modification? CarID website says they do. https://www.carid.com/doug-thorley-headers/304-ss-silver-ceramic-coated-short-tube-exhaust-headers-mpn-thy-183-ss-c.html?singleid=3110637169&url=128959953