This is just plain false. The ECM does not record the highest rail pressure. If you exceed a set high value, you will log a fault and if you don't clear it they will see it that way. If you were to clear the fault (completely, cause the fault is still there when the check engine light goes out).

The only way for them to tell is if you did a sloppy job and they can tell you "tampered" with the wiring. Or if you have a catastrophic failure that only could have happened with more power than the engine can provide in stock form.

 

Even if it did log a high rail pressure, the ECM would never see it because most of "those" boxes modify the signal going to the rail pressure controller on the CP3 as well as the signal coming from the rail pressure sensor, going to the ECM.

The ECM has some smarts that senses what the rail pressure should be for a given pressure controller signal. If the rail pressure exceeds what it should be, the ECM logs a fault. To get around this, those boxes modify both signals. The ECM generally never knows it is running a higher pressure.

By "those" boxes, I mean the boxes that raise the rail pressure significantly. Some don't.

 

Well, I have been keeping out of this and just watching - until now!! This discussion that our prices will go up if warranty claims are paid - bullpoopoo! I just bought this GOAT('05 RAM 2500) after driving Fords for the last 6 years - before that I had a 99 CTD RAM 3500, so I am not new to Dodge dealers sidestepping warranty claims, or shoddy workmanship on trucks that have power window motors falling off inside the doors after less than a year, power door locks that stick in the locked position, and will not unlock with key or manually, power seats that stick - dealers that crease your trucks door with a jack handle as they change clutch throw out bearings that freeze on the shaft in the released position, - etc.

Week before last, I went by my local Ford dealer - they know me well, in service, in parts, in sales, the owner knows me by name and visits when I come in - well, a short bed crew cab powerless stroke 4X4, loaded, listed for 53,000. I really wasn't serious about looking, but with the employee price for everyone, and all the guys I work with getting new trucks, I thought I'd look. He (FORD salesman) offered me $5500 off on it. He also offered me way below blue book wholesale for my '03 Supercrew Lariat off-road package, extremely clean, with 38,000 miles, gas truck. I left there and went next door to the Caddillialac-GMC dealer. He had a couple of half ton gassers, 2 wheel drive grocery getters. Said he diddn't want to locate a diesel 4X4 for me. (funny, he has 2 on his lot today) The next dealer down the road was Dodge. A 4X4 2500 crew cab, SLT, hard loaded except leather, with a 6 speed listed for $40,485. Where is the $13,000 difference in it and the FORD? I ended up going to the next town, and buying a similarly equipped Ram 2500 4X4. Also, I got right at $8000 off, and MORE than wholesale for my trade. List prices on these trucks bears no relation to the cost of making them, nor to the cost of warranty claims. List of these trucks is what the market will bear.

I hope like hell he gets a new enging. Granted, he should have known better than not giving it 10,000 miles to break in before he ragged it. Also should have found out the suitability of a tuner for a 2003 applied to the 2005 engine. but still, with just 5400 KM (about 3350 miles) the dealer should have no questions about warrantying it for him. Probably standard policy to have tech engineers come look at it b4 they replace it, but it is time for all to WAIT and see that he gets his engine, not to try him on the spot and try in any way to influence the decision. As for his future, hopefully he will learn to give these wonderfully reliable engines some break-in time before beating on them next time. Most dealerships don't know what is and isn't covered. Most I have been in don't want to change an engine, its hard work. I wish this guy luck and hope he prevails no questions asked.

I may have exceeded my 2 cents worth, but that is it.

Thanks,
Neil

 

I really don't think he would lie to me, I suppose someone there he trusted could have told him this and maybe he thinks it's true..with that said I also don't dissagree with you because I think the both of you know more about it than I do, so what is the process to properly clear the fault?
I'm not looking to totally bomb my truck because I use it daily to work out of but I would eventually like to put a box of some sort on it as part of the mods I'd think I would enjoy....Thanks LCH