Hello ballbandit,

I don't know what you mean by calling anyone a flake. This site has been the best source of information for me. It appears that my truck is not the only one with these symptoms. Perhaps you can offer some constructive advice, things to try or check. Surely this truck should see better than 12.3 mpg all highway.

Thought i had mentioned before, but i installed a heavier spring in the fuel pressure regulator which increased fuel pressure from the stock numbers which you acurately mentioned, to what it is now. That is referd to as the FPR mod on this site. Also as i said before, 3 people including myself were watching the gauge while he ran it on the dyno.

The dyno has two modes, i forget what they are called, but we did not use the setting that puts extra load. All i can think of is static & dynamic, still have tires in my head. Cale told me that the loaded setting would make the numbers look higher, but was not how he likes to tune trucks. He dynos Super Duties every day & is comparing mine to the countless others he has worked on. You don't think 146 hp is correct for a stock 7.3, do you? Brian also thought it unusually low.

kennedyford,

I don't know much about the HPOP. Would you give me some pointers as to where & how to check. I looked at the dual HPOPs BTS is now providing which they use with custom ITP fuel workings. Not sure if Cale checked it out as you have suggested. I too am very suspicious that the HPOP may be the problem.

As an update, i just reinstalled my water/methanol injection kit. Allbeit, i have my nozzles going into the boost tube on the hot side as opposed to the cool side or intake manifold where they belong. I made 25 psi boost in 3rd gear up hill, very fast. Ambient air was also about the coldest it has been, 64 degrees F.

Had way too much timing, after 10 minutes getting all grey smoke & stalling. Tomorrow i will adjust the pressure of the pump & the onset & full power of the pump related to boost. I have it set to start at about 1.5 psi & be on full at about 4 psi. Yeah, way too low but i wanted to make sure the new pump was working.

I will be bringing the timing back down to a safe level. Had Cale burn me a setting on the chip for it with less timing. I doubt it will effect my mileage as it barely effected power with only 1 more psi of boost. I did notice the EGTs were much lower, but had my eye mostly on the boost & the road being late night on winding, hilly roads.

grt2bbig,

As to testing injectors, a tester can be plugged into the OBDII plug that will perform what i think is called a buzz test. Try a local shop, a dealer can do it if nowhere else can. They should check fuel pressure as well. Ford sells their trucks with about 55 psi as previously mentioned, but Navistar recommends something more like 70.

If there is oil around the intake, would that be a CCV? Is it possible the turbo is spitting it out? How bad is it? There is just one main intake tube from the filter to the turbo. What are the other hoses you are talking about?

You could disconnect the small red air hose going to the wastegate & plug it on one of the threads of one of the clamps on the boost tubes. Some say it does nothing, some say you'll make more power or just quicker, i don't know but i've tested with & without & noticed a difference.

 

If I was going to call someone a flake, I would at least be able to use the proper grammar. Such as YOU'RE....not YOUR.....I can not believe I just read this post on one of the finest sites on the web.

 

Yeah, that flake business is not gonna get it done here. Take that mess someplace else.

 

Im starting a new post to refer to this and a few others that I am reading. This will be for 7.3 EX----grt2bbig----rpaquette.

 

7.3 Ex,
Yes taking off your muffler will be allot louder with your stock exhaust, I like it. I just thought that I would restate that my stock turbo would hit 30psi with Black Cloud Diesels "boost tube" witch mounts in line to the wastgate, and 33psi if a disconnected the red hose leading to wastegate.

 

Thanks superpony18,

I thought the stock turbos could go higher than 25 psi. Many people have told me so, but its good to hear another user confirmation. Everyone seems to say their exhaust sounds better without a muffler. I ought to just put on a 5" & not look back. Not sure what i'd do for a muffler then. Maybe i'll just take it off stock so i have a better idea of what i might like to do later. I've seen the boost tube they offer. Same purpose as a blow off valve, right? Fooling the MAP to think its only seeing a certain amount so it doesn't defuel?

Thanks for the supportive posts tonight folks,
Matt

 

ok so ive moved to the other post, ballbandit, whats up man why go and stir things up with this name calling stuff? no need for that if you dont like what people have to say just keep it to yourself. we just need help finding help with our trucks i thought that was what this site was for.

 

7.3ex

I meant to say that you've got a flake as your truck has something odd going on with it.Sorry for the misunderstanding, im not that kind of person to cause trouble,like everyone has said this site is very helpful.

 

7.3 Ex

You can make them go higher they just don't like it. I am told that if you install a 1.0 a/r turbine housing and wicked wheel it can go higher, I want to say 40 but don't quote me. I am looking for one if you know anyone. The boost tube I am speaking of goes on the red boost reference line going to the wastegate, I think it does the same thing as turning the rod in on the wastegate but not real clear on that. No problem on the help, my '01 is down right now due to overboosting.

 

Works for me. Glad to have ya bandit.

 

Im trying to get us all on this thread I started.we will all be able to throw out ideas. https://www.ford-trucks.com/forums/s...d.php?t=504320

 

The boost tube is just a method of delaying the wastegate from opening. I have had my boost up to 42psi with a steep hill, heavy load, tons of fuel and high EGT. I didn't keep it there long, just wanted to find the end. I don't know at what point the turbo grenades but i'm gonna keep mine under 40 for sure.

 

Hi Mat

im in the same boat as you. I have a 2002 F350 7.3 and i have all sorts of work done to it including banks turbo and intercooler and 75 hp injectors, 100hp programmer exhaust and intake. For some reason i am still running weaker than i should be but i am going to a person who tunes diesels and also has a dyno. I will be going on july 14th so hopefully i will find an answer please notify me if you come up with any answers and i will do the same.

 

...Welcome Ryan to Ford Truck Enthusiasts!

See you on the boards. ….

 

I was just working on another 7.3. It has a Bully Dog chip with 5" exhaust, & an Edge Juice. Also a 6" lift with 35" tires. Owner says it gets 18 mpg in town, 20 on the highway. I just brealy got about 12 again, have to calculate exactly, but it is pathetic.

When i'm driving, it actually feels like a giant, invisible hand is holding the truck back. As if the engine is working backwards. It is wacky. Checked the HPOP level & the oil is just 1" down. EGTs easily hit 1,000 just on small hills in overdrive. Cruising flat is usually under 600.

In the stock setting there is no smoke at all. However, it is completely gutless. It has to stay in 3rd gear to keep speed up. I mean at 60 mph on a slight grade it has to downshift to hold the speed. So weak.

The only mod i have not done to increase breathing is an exhaust. I was told by one guy locally that as soon as he went to a 5", he gained 3 mpg instantly. Does anyone think that would make that much difference on my truck? Even with water injection?

Would i gain 5 mpg to be where it should on the highway? Another fellow the other day said he gets as good as 27 on the highway. Lows are always over 20 even towing, same roads i drive. Both of us are calculating by hand.

I do have a new DTC. GPR something. I have found nothing loose at the glow plugs but will check fuses & really dig into it soon. This just popped up within the last week or so. Temps are usually in the upper 80s when i'm starting up anyway.