Great data from PPEI - Chevy and GMC Duramax Diesel Forum
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post #1 of 34 (permalink) Old 10-22-2019, 12:43 PM Thread Starter
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Great data from PPEI

Take a look at some side by side data for emissions compliant tuning! We can get your truck running the way it should have from the factory. Let us know how we can help!
#PPEI
#Redifiningthelimits
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post #2 of 34 (permalink) Old 10-22-2019, 06:51 PM
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Does it regen any more often at that level of increase?

DPF/SCR technology summarized in three words: It doesn't work.
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post #3 of 34 (permalink) Old 10-22-2019, 08:15 PM Thread Starter
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From what we have heard from the guys at PPEI their emissions compliant tunes or Street Performance Calibrations are actually reducing the number of regens and in turn aren’t using as much DEF.
They have installed an extremely high tech dyno and are continuing to monitor data to help back up their claims.
We are excited to see where this is headed as to be honest I personally was not expecting gains like this out of the gate!
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post #4 of 34 (permalink) Old 10-22-2019, 10:55 PM
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Marrrkkkkkkkkkkkkk!! Glad to see ya around on here. Those are definitely some good numbers. Especially 23mpg with it a hair under 500 to the tire.

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post #5 of 34 (permalink) Old 10-23-2019, 09:10 AM
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DEF usage and regen rate are two totally different scenarios.
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post #6 of 34 (permalink) Old 10-23-2019, 10:42 AM
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Quote:
Originally Posted by DirtyMarx View Post
From what we have heard from the guys at PPEI their emissions compliant tunes or Street Performance Calibrations are actually reducing the number of regens and in turn aren’t using as much DEF.
They have installed an extremely high tech dyno and are continuing to monitor data to help back up their claims.
We are excited to see where this is headed as to be honest I personally was not expecting gains like this out of the gate!


so not regening as much changes a function of the engine that happens outside of regen? With claims like that supported by there data i would say there data is garbage.
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post #7 of 34 (permalink) Old 10-24-2019, 05:50 AM
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Originally Posted by J83 View Post
so not regening as much changes a function of the engine that happens outside of regen? With claims like that supported by there data i would say there data is garbage.
Not to start a huge debate; everyone has their opinion on whether the data right or wrong. Knowing Kory Willis and PPEI for over 10 years now, seeing their operations first hand, watching and listening to him working his ass off to help save the race industry, the data is right based on the platform and test equipment they tested with. PPEI has just recently installed a new highend dyno and a ton of additional test equipment so they can further their testing and improve their calibrations even more.

Everyone knows fuel economy is mainly based on how heavy your foot is and every truck is different.

You are right, the DEF usage isn't tied to the regen at all. That said, you can use less if the tunes are so clean.
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post #8 of 34 (permalink) Old 10-24-2019, 06:00 AM
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I wish my LML got that kind of mileage! I was seeing around 14mpg stock and getting around 18.5mpg currently with a tune. I don't have a heavy foot either. Would love to be getting over 20mpg.

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post #9 of 34 (permalink) Old 10-24-2019, 06:14 AM
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Originally Posted by eli_harper13 View Post
I wish my LML got that kind of mileage! I was seeing around 14mpg stock and getting around 18.5mpg currently with a tune. I don't have a heavy foot either. Would love to be getting over 20mpg.
I understand completely. Everyone needs to remember, if you deleted your truck and used PPEI "off-road" tunes were not set up for fuel economy; because they were intended for off road use.

With their new Street Performance Calibrations, their focus changes to making them strong, responsive, even cleaner and improve fuel economy.
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post #10 of 34 (permalink) Old 10-24-2019, 06:36 AM Thread Starter
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