u7130 diagnostics? Poor fuel economy?

Partsdan · Post by **Partsdan** » Mon Mar 26, 2007 12:28 am

I just got the U7130 for my 03 cummins H.O. and was wondering if it should have real time monitoring and loging? Under the diagnostics menu it only shows trouble codes. Also after downloading the performance tune it comes up with a code for ecm program error? Is this normal? There is no check engine light. I cleared the code and down loaded the tune again, and the code came back.
Last question, I posted the other day about poor fuel economy and not having as much power as I expected, and the reply was to change my fuel filter, so I did, I also added a pusher pump kit that I have been planning. Fuel economy is the same (about 3mpg less than without the programer) and performance is the same. (I have been driving with the cruise set at 65 mph for comparison on the same trip as i've done without the programer).

johan · Post by **johan** » Mon Mar 26, 2007 2:44 pm

What revision do you have on this Predator, if i recall the very first revs did not have live data, the later revs have it.
You're saying that you can not feel the performance increase when the programmer is installed?
"Fuel economy is the same (about 3mpg less than without the programer)" So if you load program you loose 3mpg??

Partsdan · Post by **Partsdan** » Mon Mar 26, 2007 3:29 pm

Revision shows 8r24. This is the version that was loaded when I recieved it last week. I believe this is the latest. I can feel a performance increase, but not a lot, mostly it seems like the shifts are a more firm. I had a Edge EZ before and had a bigger performance increase on the lowest setting than I have with the predator.The performance is acceptable to me, although not as much as expected. I have only tried the performance tune though, so the others may be better. The big deal is the 3mpg loss in fuel economy. Any advice or suggestions would be appriciated.

johan · Post by **johan** » Tue Mar 27, 2007 1:38 pm

Hmm, not sure what to tell you on this one. This is a first for me, the performance tune is quite a noticeable improvement over stock, and you should gain up to 3mpg, not lose. Try the tow and extreme tunes and see how they behave, also if you could get me a calid that would help, go to options>>troubleshooting>>show calid in predator.

Post by **mikel** » Tue Mar 27, 2007 1:41 pm

Are you logging actual mileage, as opposed to using the reading from the vehicles trip computer?
Often times the mileage inthe trip computer is inaccurate.

Thanks

Partsdan · Post by **Partsdan** » Tue Mar 27, 2007 1:44 pm

I'll switch to the extreme tune at lunch today, and get the cal for you. I'll let you know this afternoon what comes of it. I have heard nothing but good about the predator and can't understand a loss in economy. I am also changing the place I'm getting fuel just in case.

Partsdan · Post by **Partsdan** » Tue Mar 27, 2007 2:42 pm

Yes - logging actual milage, hand calculated. Calid is 12305053AH. Tried the tow tune and seems to run the same, no milage info, I didnt have time to drive very far. However after the program, I came up with the same trouble code "control module error not programed". I also got a overboost code this time after driving it hard. No check engine lamp on either code. I wonder if its overboosting and defueling? Is the Control moduel error code normal? I have got it everytime I have programed. I'll check out the overboost deal this afternoon after work. I think it still has the boost elbow from the edge in it, so that would cause the overboost condiditon.

Partsdan · Post by **Partsdan** » Thu Mar 29, 2007 5:57 pm

nothing? no suggestions? By the way, I changed the boost elbow back to stock. No change in performance though. I'm still not sure about fuel economy on the tow setting. Doesn't feel any different than the perfomance setting.

johan · Post by **johan** » Fri Mar 30, 2007 8:53 am

I am not sure what to suggest next here, if you want i could send you a custom tune with the performance tunes in it, this way i am sure that the changes we make in the regular tunes are applied.
Let me know if this would be something you would want to try. You would need a serial cable for this.

Partsdan · Post by **Partsdan** » Fri Mar 30, 2007 10:49 am

I would be willing to give it a try, I will pick up a serial cable in the next day or two. You can e-mail the tunes to(please remove that after you e-mail me). Thanks for all your help, I'm sure we will get this figured out soon. I have some heavy towing to do this weekend, so maybe i can get things worked out then.

Thank you

johan · Post by **johan** » Fri Mar 30, 2007 10:56 am

File sent. Let me know what happens.

trik396 · Post by **trik396** » Fri Mar 30, 2007 1:29 pm

If you ran the Edge EZ for awhile, there's a chance you pressure valve is shot and now you're bleeding CP3 pressure off all of the time which will kill performance. Beliieve me, you have to notice a huge difference on extreme. Something else is wrong with your truck.
This will also account for low mph as you're not atomizing your fuel at the correct pressures. JMHO

Partsdan · Post by **Partsdan** » Fri Mar 30, 2007 2:19 pm

I havn't tried the extreme yet, but I thought about the pressure valve. I have replaced it. I appriciate the advice, and the pressure valve was leaking off, but that was before I even got the predator. I installed a new one just a week before I got the predator. I was worried about injectors and the CP3, but it runs really good and has no excess injector noise. This truck will out perform a lot of stock 03's with just the factory tune. There is a increase in power with the predator tune, just not a lot. I could be expecting to much. I will try the extreme tune when I get a few minutes. The big deal for me is the fuel economy. Any other suggestions are very welcome. If I do have a problem with the truck I would love to find it. My buddy is a cummins tech, and he drove it yesterday. He says it runs great and he doesn't see a problem. I havn't had a chance to tow anything with the predator, but I am sure I have more torque. I'll post again after I try the extreme tune, and the custom tunes Johan sent.

trik396 · Post by **trik396** » Fri Mar 30, 2007 2:57 pm

Personally, I cannot fathom an increase in MPG when your're gaining that much horsepower. Power requires more fuel, more fuel and less MPG. Anyone that claims anything else is full of it...

Post by **mikel** » Fri Mar 30, 2007 3:09 pm

trik396 wrote:Personally, I cannot fathom an increase in MPG when your're gaining that much horsepower. Power requires more fuel, more fuel and less MPG. Anyone that claims anything else is full of it...

I would have to disagree....we are most certainly not full of anything except kick ass tunes, and a gain in mileage is absolutely possible with a properly tuned vehicle, be it gas or diesel.

Thanks

u7130 diagnostics? Poor fuel economy?

u7130 diagnostics? Poor fuel economy?

RE: u7130 diagnostics? Poor fuel economy?