Alot of people in the cummins forum say that with a good tq converter and an aftermarket valve body that you can hold up to about 500 to 600 hp if your stock tranny is still in pretty good shape.

Blue I got my custom tune to finally download into the truck. The way my truck accepted mine was I installed the regular diablo extreme tune first, then I wrote over that tune with the rkl puff tune no timming added and it accepted it and worked fine. If I tried to install the rkl puff tune on top ...

The pre 28 version has the right calid#s but they will not work with the r30 update version.
pre 28 tunes calid #s end with the letters AI just like my truck.
the post 28 tunes calid#s end with the letters al and they dont match my trucks calid #s.

Does anybody know?

I installed the r30 download on my predator and it works fine. The problem I am having is that the rkl puff tunes post 28 have an (al) at the end of the tune for the calids. My truck says it has an (AI) calid # so I can not use the custom tunes. Need help as to how I can fix it.

For some reason when I try to download the post28 version puff tunes (stack & non-stack) the computer keeps saying cannot find webpage.

I also tried Save target as and it still didn't work.

Am I doing something wrong?

I need to get a custom tune with very little or no timing so I can stack it with an Edge Juice. How do I go about getting in contact with Johan.

It idles fine with just the puck, and the stock tune back in the truck. The idle gets rough and engine rattles when I install the predator. It seemed like it idled better before I updated the predator. The fuel control actuator (FCA) on the CP3 was modded by opening passages on the metering valve to ...

I am having very rough idle and engine rattle with my predator on any tune,tow,performance,extreme or any of the r29 tunes. Thought it may have been the puck but it isn't. Does anybody might no what is causing this?

I also bought the predator/puck combo for a 2004 model and i found out i have the ...

The idleing problem is worse with the puck than without. When you say remove it do you mean take it out completely or just turning it back to stock mode. Because it still does it in stock puck mode.

By the way I am running the extreme rkl puff tune no timing added.
It is ok, but it does not feel as strong as the original extreme predator tune.

The code I keep getting says PCM not programmed. I have already updated to the r29 version.
The problem with reving is with any tune in neutral or park. It takes about 30 to 40 seconds to idle back down and the whole time it is spitting and sputtering. It does not do it when i put it back in stock ...

I just installed a new Predator/puck combo and I have two problem with it.

1. When reving the truck in neutral or park the RPM's go up and do not come back down, I have to kill the motor before it blows up.

2. I keep getting a permanent trouble code saying PCM not Programmed. Delete it and it ...