I had the truck on the 80hp towing tune, I'll make another stock run tomorrow.

I just got the new up pipes and billet wheel installed with RR return. Used my boost pressure tester and have it 95% sealed, need to order some new spider boots, spent about 2hrs trying to get them to seal up.

I set my pids from tuglys post, and they read as follows, my concern is the IPR. All readings are from a 20mph to 70mph run. These are the max readings.

boost: 28.5 psi
Icp: 3668.5 psi
Ipr: 82.0
Fipw: 4.3
Ebp: 53.0
Map: 42.7

 

What are you using to get these readings, Torque Pro? If so, you can throw out the boost number, the PCM will defeul the truck very quickly if you don't have a boost fooler on the map sensor, and if you do and the map is reading 28.5 you have to get it calibrated better. Otherwise, max numbers don't tell the whole story. Can you post a graph?

 

Yes, I'm using torque. The boost is reading minus baro.

I can graph it tomorrow, what parameters do I need to set up the graphing?

 

I am not sure on the Torque app how to graph, I haven't messed with that feature yet. But the ICP, IPR, RPM, and FiPW are important to get an idea of the health of the truck. Hopefully Tugly will see this and chime in soon.

 

That is a hot tune.... Who is the author/tune writer?

You are correct, the IPRDC% is high, almost 2x, as is the ICP and FIPW. What kind of HPOP are you running...just curious. Was that the high point where the ICP spiked or was your HPOP maintaining that?

Make sure stock is actually stock when you make your run as long as you have your original split shots in there.

You should probably throw in RPM's and MPH into the graph.

 

Reads like an aggressive tune. charting would be most useful. The ICP is probably a spike after letting off the throttle and the IPR is trying to supply that 4.3 FIPW.

 

Truck is all stock except the PHP tunes and billet wheel with the mods in my signature.


I'll make a stock run again this morning graphing out everything along with MPH and RPM's.

 

Yup - 80 HP tune, it had a "Stinky Spike" on the ICP when he let off the throttle.

During my research on this very issue, I've learned that this is what we have to expect with a tune over about 60-65 HP. A good tuner can keep the ICP up and the IPR down with a 60-65 HP bump, but 80 HP is asking too much from stock sticks - and you get these results. Does it make 80 HP? Yep. Does it have better 0-80 time than a 60 HP tune? Nope. I have seen it over and over and over....

I know what some are saying - "Tugly's talking out the wrong orifice". Test it for yourself. If you don't have a good 60 HP tune at your disposal, just feather the throttle in your 80 HP tune to keep the IPR at about 40-45 and the ICP at 3000 while logging your speed. Compare this with the WOT times when done.

 

i have the data logged, but I'm not smart enough to convert it in excel from the raw data to a line graph. So i'll just post the raw data.

 

attached excel spread sheet

 

Yup. What one can expect on both tunes. Feather the throttle in your 80 HP tune to keep the IPR down to 40-45% and watch what happens.

 

So your opinion, everything looks healthy?

 

More to the point - that 80 HP tune looks as expected. While it's nice to get the kick in the pants one gets from an 80 HP tune - it has a very narrow window of this "impressive" performance. Once out of the window, the truck then performs in less-than-permagrin mode. A 0-80 WOT run is the real test of a tune - and I have seen the 60 HP tune beat the 80 HP tune at this countless times.

That's the tune, but your truck looked healthy in stock mode. I can't say all is well... only you can. I can say that with the limited data I have from afar, I see good numbers.

 

Thanks Tugly, the truck runs good, I've got no complaints really. I was thinking my boost numbers were low only getting to 24psi with the stock tune on it. I thought with the billet compressor wheel I'd see closer to 30 or above?

 

Nah... stock tune was good for about 22 PSI for me with a boost fooler, stock turbo/sticks, and air in/out mods. I suspect to get over 24 PSI boost, it takes more fuel than a stock tune.