So ever since my 7.3 has had a tune it's tossed the P1211 code. In stock mode it's never done it, and in the tow tune it would only sometimes. But anything higher than that it would toss the code.

Anyways, upgraded some stuff, regulated fuel return, WW2 turbo wheel, over boost code regular, 4 inch exhaust and some other little stuff...

Stock HPOP had 255,000 miles on it, so figured it was getting weak n wouldn't supply the pressure for when I upgrade injectors. I have Tony Wildman tunes ATM, they are better than my previous tunes, but still have some quirks sometimes.

Anyways, put on the Honey Badger Jr. Pump. In tow, I get no codes, step it up above that, and if I go to WOT I get into 3rd gear and 35+lbs of boost and it triggers the CEL and the P1211 code. And same with any other tune higher than tow. The truck feels a lot stronger than it did with the stock pump but that code shouldn't be popping up still I wouldn't think.

I put a new ICP sensor on as the stock one had oil in the plug, and put a new Regulator in too, but that was crap out of the box and had to put the factory one back in.

You guys have any recommendations, or should I get some new tunes written and go from there??

 

need to log a WOT run, more info in this thread on what to monior
https://www.ford-trucks.com/forums/1...ine-light.html

 

My guess will be the tuning is the culprit....but, record some runs and post up the data.

 

Well I did watch my pressure and duty cycle once with this pump, but I didn't think it was accurate due to it was within the first 15 miles of driving after install. I can't remember off hand, of the duty cycle, but the pressure did drop below 2500 for a little bit, I was just watching gauges though, I don't have a data loging app on my phone.

That's the kicker here guys I don't have a computer, I just have a iPhone...... so I need to get a app to data log with this. I have DashCmd but that doesn't have logging capabilities I don't think..

 

did you drive it an hour after changing out the HPOP? there could be air in system still


using an old IPR? possible that is the issue but with out logging data its going to be expensive guesses.


android tablet can be bought cheap and can do most of what you need done

 

I had it running on high idle in the driveway for about a hr before I drove it. I've since put 100 miles or so on it. I did try a new ICR, that was horrable made the truck rattle and run like total ****, caused all sorts of codes I've never got before. So I pulled it out and put the stock one back in, but when I compared the two the "barrel" that goes into the pump was shorter on the new IPR so I'm sending it back and firing to be getting a Motorcraft one and putting that in.

 

Performance tune.... 1700 psi and 65% at WOT in D.

 

Well got my buddy to come over with his computer n we did some tests....

Buzz test is good, the Contribution test cylinder 3 and 8 Failed.

So, cups or o rings bad? Or?

 

FIPW!!!!

What is the Fuel Injection Pulse Width?

I bet it is the FIPW.....if the FIPW goes much above 2.8ms for any length of time, that is probably the culprit.

Failure on 3 & 8 are common even on healthy engines.

For your perusal: http://www.powerstrokenation.com/for...-loss-icp.html

I have seen some of Tony's tunes do the same thing. The only tuner that writer who tunes commercially that I have not seen this to be an issue with are Matt's of Gearhead Performance.

 

Crap, we didn't Do a FIPW

Goin to have to see that once....

We started screwing around with testing because we tried to recalibrate my speedo and it wasn't working, we ran a data log at WOT, the lowest we saw the ICP was 2300 psi...

 

2300 psi ICP at WOT is a symptom of a hot tune with a "LOOONNNGGG" FIPW depending upon where it occurs during the WOT run. Also, look for a SPIKE when you let off the throttle. This is known as the "Stinky" spike by some around here, top of the day to ya Rich. Many of us have experienced it with most tune writers.

 

Well now that you say it, there is a pretty good spike when I let off.....

 

Well, that just about settles it. Matt's tunes are the only commercially available tunes that I have found that do NOT cause this issue. I recently tried some tunes from Arkansas in a friends truck that caused the same issue.

Be careful and monitor EGT's very closely until you resolve the tuning issue. Long FIPW/Low ICP causes reduced atomization of fuel and a prolonged injection event. Neither are good in this case.

Oh BTW, as far a cylinder contribution tests go, changing tunes will also cause the number of cylinders that failed to decrease or to disappear completely.

 

Hmmmmmm, well than... Matt's tunes, you mean gearheads? I'm drawing a blank ATM here... I watch my EGTs like a hawk, I don't want to melt it down!! I haven't used any tune above a tow tune since I've gotten this TS chip. With the Wildman tunes it doesn't get as hot as quick as the TS tunes did, but it has some funny quirks sometimes, like the dash "resets" when changing tunes, or sometimes it'll just die when you change them.

So you thinking I should totally remove tunes, redo the contribution test, and than if that's a pass, get some different tunes before ripping into it?

 

That would be the plan I'd go with.