Save your money and leave it stock until the warranty runs out. It has plenty of power for what you want to do with it.
I agree wholeheartedly. Just fixed a 5.9 cummims that blew the pressure relief valve and cracked a couple injectors. The relief valve had done it's job at one point, because instead of a return line like was supposed to be there, it was simply plugged off with a bolt. Meaning it blew to save the rest of the system, but instead of replacing it, he plugged it. In his defense, that stupid little valve was 800 dollars?
still, when one starts spiking rail pressure and bypassing safety devices, one shouldn't be surprised when he breaks injectors and wears out pumps.
Check out these screen shots to get an idea of how much these chips actually manipulate things. The first pic is after I removed the chip, the second pick is with the chip still in. Light blue is fuel pressure set point and dark blue is rail pressure, red is the pressure actuator. See what the chip is doing? What is the ecm going to do when it wants 20,000 psi
but it sees 3,000 psi
.? Keep in mind the pressure isn't actually 3,000, it's still at 20,000, but the pcm
doesn't know that. It thinks it's at 3,000. Note how low that regulator drops and how long it stays there. (The lower the duty cycle the more the pressure.)
I can only guess how high the pressure actually gets because the actual rail pressure reading is no longer accurate. But I know it's more than thirty because the relief valve opens at thirty.
Guys, don't do this. In my opinion, tuning this aggressive doesn't belong anywhere near these trucks. Not unless it's a sled puller or something. After all, sled pullers aren't really worried about damage. This guys lucky he didn't do anymore damage than he did.
I'm not saying don't tune. Just think about what you're doing is all.