performance questions

[Ramsmoker]

Hey klutch, I was going to PM you for more disscussion but since you brought it up we'll talk here. I understand what big oil will do and most people here do also. The drawback for my daily driver is the cost. I have a good working HPOP that keeps right at 2800psi to 100mph. If I ever want to go real fast it is something i'll have to do. I have been looking for some hard info on the big oil but only find i think and i'll bet and it should. Tell me of a dyno test. I need to know.

[drmiller100]

if you put a chip that gives another 80 horse to the rear wheels, there is NO WAY you are seeing 2800 psi all teh way up in RPM without big oil.

now if you are running stock or something that gives 20 horse or so, then sure.

[Ramsmoker]

Well Doug, This is from a guy who doesn't believe in a stacked ICP unit to hold back the oil in the heads.

[drmiller100]

that's right.

if you add too much pressure and too much timing, you can skyrocket your CP's without knowing it.

if there is more power to safely be had by cranking the pressure or timing, I am assuming that the tuner guys are already doing that.

[Klutch]

The good programmers like Jody and TWildman know what to program when you are running big oil. The pressure is not to be concerned about as the program will ask for whatever they program for. Timing is changed with big oil so they will program for that as well. It is very important when you get big oil you get the proper tune/program for it.
As far as dyno sheets I don't have any. Just by adding big oil your not going to a huge jump in hp. The huge hp jump would come from other mods you would now be able to utilize because of the big oil. Big Oil alone you would see a much broader power band, snappier off the line and depending on the state of your current hpop and program much more power on the top end because your hpo will not be falling off on the top end.IMHO

[drmiller100]

so lets say tipton writes a program, and does the testing for 80 horse. He checks CP's and they are just fine.

Now, lets say I decide to fool the system, and run 800 psi higher oil then Tipton had figured on. I do this by putting my own gizmo in that fools the system.

Will the higher psi cause problems? What is the worst that could happen?

My point is that you should not stack the 10k mod with a good tune, unless you talk with the tuner and he has tested it.

Likewise, if you add big oil, you should talk to the tuner and make sure the tunes you have are compatible with big oil. In most cases, the tuner can change things to optimize the big oil, and you can get even more power.

[Ramsmoker]

The reason for the dyno sheet was to see the range of the gain and the trucks setup thats being used. I might be able to play more with my toys if I can get my kids thru the U and get out of my house. If you find someone with roller time, I would like to see th pounds per hour fuel rate and carbon menoxide. You know Doug, On one of your first posts you said something to the effect that we liked to work without fact here. I didn't see anything at the diesel stop explaining as much info as we twisted out of you and klutch this week. I went over to see if I had missed something in the fact's. What I read was "i know a guywho" or "someone told me he tried this" and so on and so forth. I'm intrested as heck and many many people have expressed this to me in PM's. Many members here have spent there whole working lives with engines of all sorts. I don't know it all and I cruz all the sites for direction. If I see somthing I like, I build it to see if it fits my rolling puzzel. I don't want mine to be "done". I'm going to work harder in accepting new views and test them for the good of all. That is what Powerstroke.org is all about. Some of us drag race, some pull sleds but for the most us. Its pulling RV's, backhoe's and other trailers for other sports. Lets all bond. Bill

[drmiller100]

>I didn't see anything at the diesel stop explaining as much info as we twisted out of you and klutch this week

then you might consider spending more time reading over there. you might read my FAQ i wrote over there.

two years ago I hadn't even driven a diesel pickup. everything i know about diesels, and getting more oomph out of a psd, i have gained from dieselstop.com and people over there.

Klutch OBVIOUSLY knows more then me.

PSD's have the reputation as less power then cummins or duramax. the 7.3's have teh rep as less power then the 6.0's. unfortunately, i believe we have wasted enough time that the 7.3 will always have this reputation, as we can't seem to get a consistent recipe to get 400 reliable horses at the rear tires without spending a lot of money.

and things like the 10k mod certainly do not help matters.

[mschn99]

now dont take this as sarcasmn or anything, because its not......but you guys running the big oil systems all are saying it is benificial because the stock pump that could keep up with the oil demand when it was a low milage motor, gets weak and cannot keep up at WOT........why not just replace your HP pump if you are feeling it fall at WOT......that would be a heck of a lot cheaper than your big oil system for the average joe.............Marc

[Ramsmoker]

He we go, I'm going to step up to the plate. Marc is correct in the pump output of a good working unit. I have run mine with a glycerine filled 15,000psi gauge and with stock injectors and turbo performes great. This throttle responce you say you gain at low speed. That comes from a pressure increase to the injectors. That is what the 18K mod does. Doug, I think you need to get broadband. This mite expand your thinking. What we have been trying to say from the beginning is that big oil is an improvement to the 7.3 but for the everyday driver and tugger, a guy could spend $2000 on other things. You seem to be against the 18K mod and I don't know why. You have never tried it. Like I said. It is doing what your big oil is doing but in a range of use that 99.9% of PSD trucks run in. Your thinking inside the box. Get a ladder and take a look around.