my buddy has a 7.3 diesel he did the resistor in it and it smokes like a mother i wanna do it to mine how do i do it please help me

 

Resistor mods distort the ICP sensor signal to the PCM. So, 1000 ICP is seen by the PCM as 750, with a 10k, 500 with a 5.6k, etc. I have no idea what the actual ICP is per resistor, because data logging don't work once the resistor is in there. The sensor is lying to me at that point.

I do know, that a healthy 17* HPOP is capable of pressures well above the system limitations. So, with the ICP sensor lying to the PCM, the PCM will ramp the hell outa the IPR tryin to hit the ICP it thinks it needs.

And if you're HPOS is all in good shape, those pressures will change that. O-rings will start seeping, the poppets in the injectors will hammer the seats all to hell and start leaking, the plastic diaphram in the ICP sensor won't like anything over 3000 either, I promise.

A chip will do the job way better, way safer, and be way cheaper in the long run. Don't try the 10cent horsepower mods. There are many reasons why no shops offer a "resistor kit."

 

I need to take mine out I only have it for the lope at a stop light next to a cummins

 

whats the source of your false info?

 

What's the source of your info that says otherwise? Let me think a second, and I bet I can guess. Both their names start with J, don't they... Not a bash, just sayin. Those two are the only people that push the system higher.

My source is common sense, mostly. That and reading and observing things.

What's the system designed for? 3k...

What's an untuned PCM ask for? 2828...

What makes me think the system will survive more over longish periods? Nothing.

It won't even survive 3k over long periods.

 

huh? both whos names?

show me proof that the orings will start leaking, proof of blowin poppets, and proof the diaphram in the ICP sensor will start leaking SOLEY from HPO higher than 3K.....

also, how will a healthy stock 17* make more than the systems limitations? i have never seen a stock 17 make 3500-4000 psi....


it wont survive over 3K for long periods.... LOL so 5 years and over 200K miles doesnt count as a long period of time? i know a certain someone with a early 99 black 2wd dually that has been makin 3200+ for that period of time with none of your above mentioned problems from excessive psi....

 

Jody and Joey... Surely you knew who I was talking about. The Extreme ICP kings. Both great guys though, from what I can tell, having only dealt with one of them. I'm not trying to start a bash though, so I'll leave that right there.

Solely? Guess I'll have to post more carefully, I certainly didn't mean "soley." Do I think it contributes though? Absolutely. There are mechanical limitations to how much ICP the poppets can hold, believe it or not. If you're forcing more pressure at a valve than it can hold, eventually, the pressure that valve can hold will be less than it could at the beginning. It's called erosion.

O-rings, in our system are rated at 3000 ICP. Judging from the observed performance of said o-rings over time, I'm PFS IH didn't put beefier o-rings in there "just in case." Having worked with one or two complex high pressure hydraulic systems in my day, o-rings not rated for the pressure they're exposed to will start seeping. If they don't outright shred. I haven't exactly studied this in a 7.3 PSD, as I thought it was pretty obvious.

The ICP sensor has a plastic diaphragm in it, so it's a crap shoot. Could it hold over 3k? Probably. Have I seen more than one instance where the ICP sensor plug was full of oil after short periods on a high ICP tune? Would you like them mailed to you? I'll start a collection.

Stock 17* probably won't make 35-4000. Who cares. They will make 3300+ in certain instances though. Would you like the data log?

I can't even believe you're arguing the last point. Show me ONE truck that has been capable of reaching that ICP for that extended period of time, without some maintenance here or there on the HPOS? I've data logged a few 7.3 PSD's, and have yet to find ONE SINGLE truck over 150K that DIDN'T have ICP issues, AFTER pump swaps. The AD trucks I've been able to look at over 150K all experienced a sudden drop in ICP right after they pass 2900 ICP. They were unable to maintain or even reach in some cases, 3k... Why? Wear in the system. What wore the system? Pressure = friction. Friction = wear. More pressure = more wear. What does water over rocks cause? Erosion? Am I repeating myself yet?

My own truck has been meticulously maintained with religious oil changes at or before 3000 miles since I bought it with 30k on it. It now boasts over 200k as well, and it experienced a low ICP issue before AND AFTER an aftermarket HPOP was added. So, while poor oil may have been a contributing factor to some of the issues I've seen in other trucks, it wasn't in mine. And my issues were identical to others.

So, 400,000 7.3 PSD's prove my point. Pressure wears things. But by all means, run extreme ICP, and I sincerely hope it works out for you. I really do, but so many people have already proven that it's dangerous and in some cases even counter productive.

But just so you realize, I can't think of a single shop doing anything worthwhile for the 7.3 world that runs or encourages you to run much over 31 - 3200 ICP.

And my data logs of Bills tunes don't even show that much.

 

i want to clarify that i never want to be associated with Jody ever again... just my experience.... Joey i like fine...

i will reply to the rest when i am less tired...

 

Joey is an A+ dude.

He catches hell about the 4k thing though.

 

Thanks Tom and Jim.

FWIW, I have been running high pressures for some time now with no ill effects. But keep in mind, these trucks only see high pressure at WOT. Also, our ICP sensors are used in other applications as well, that see up to 4000psi. The wifes Excursion had a seeping ICP sensor, but that was before the pumps. They tend to leak over the years, even in stock form unfortunately(expensive little suckers.....).

To the OP, IMO don't mess with your ICP sensor with resistors. You can have everything you want with some good custom tunes, from your Tuner of choice.