The problem was solved with the 7159.
The truck runs great now.

My retailer is sending me a 7158. It should be here any time now and I will know for sure if that is what's going on here. I sure hope so, but at least the Predator is keeping me happy for now.

I'm having similar issues too. Does your truck idle rough and sound horrible? My build is 10/03, and I think we are in the same boat. I am going to try a 7158 as duallydave and Johan have sugguested. I will keep all of you posted with the progress.

I'm going with Johan's advice and your to try the 7158. I am calling the vendor 1st thing in the AM since I would like to have this resolved asap.
I need this power so I have an excuse to build a better trans for the truck.

The 10th of my VIN is 4.

I will call the retailer and see what he can do for an exchange for me, but I think it will be a hassle. It came direct from a wholesaler with the retailer being the middleman never having possession of the parts.

ya my truck is a 04 and i tried 3 -7157 till i decided to try a 7158 for an 05 and all is well.

Is yours a 2004 or a 2004.5?
Production date?
Thanks for the input.


JOHAN- Your input on this? I don't know what the difference in model years did to the electronics and I would like to know what you ...

With a truck built 10/03 it is considered a 2004. Which part number should I have?

Today I checked all of the connections again in the daylight. Nothing is wrong on the truck side. I changed the Predator to a stack tune and hooked the puck back up. It sounded horrible at idle. I didn't drive it like that as I don't want to damage the truck.

I need to know what is going on here.

I decided to change the setup in my truck. I had an Edge EZ that I liked but I didn't like having to remove the cover and change jumpers to change the tune. I was going to stack it with a Predator but I decided to go with a stack that was developed by the same company.

So today I installed a D7157 ...

I get 16.5 on a mixed, mostly city, drive cycle. I can get 20 empty at 65-70 on flat land with the cruise on. Towing a 24' enclosed car trailer weighing 10k I get 12.2. That's just stock tune with cold air intake and 4" turbo back. I will be towing with the Predator and Puck set reasonably low but I ...

That would be great since I already have the EZ.

I have the same question about the wastegate mod. I have been told that the boost fooler works great with the puck.

I agree with the BD valve body. I am ordering one for my current truck this week. They improve the shift quality, raise the line pressure to prevent slip and run alot cooler.

I will probably be going with the BD converter as well. I picked up 2 mpg on my old truck with the converter and valve body ...

What does the Predator change in the transmission program on a 2004 (early) Ram 3500 Cummins?

Has anyone used the Predator tuner with an Edge EZ box? I already have the Edge but it's a pain to change the power levels unscrewing the cover and changing jumpers and I would like more power. I would set the Edge in the tow setting and leave it there and use the Predator to get the extra power ...