Bully Dog Power Pup

josh.c · Nov 20, 2011

Stomper, is that a pre-DPF ISX you've got?

SHC · Nov 20, 2011

Nice Stomper.

Today I found out that my fuel metering block is cracked and leaking, so there is another culprit to the horrible fuel mileage.

SHC · Nov 29, 2011

Just an update, I reinstalled the 6NZ tune with modified FLS/FTS programming and my mpg for this trip was 7.44 and that was with some headwinds and a snow squall in AR/MO

fortycalglock · Nov 30, 2011

Nice!!!! 7.44 is nothing to scoff at in a brick like we have.

SHC · Nov 30, 2011

fortycalglock said: ↑

Nice!!!! 7.44 is nothing to scoff at in a brick like we have.
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Honestly just the increased performance has made me happy. I'm excited to see how much of an increase I get with the new turbo and manifold.

Markvfl · Nov 30, 2011

Stomper said: ↑

I'm going to post the content of a mail note I sent my wrench and my boss following an install of the power pup, using the max power program for my ISX475 come-apart. The programming apparently comes in two stages for this model... the power, then the economy. This note was written after the power program was installed.

-=-=-=-=
At this writing Ive driven 255 with the new program. As installed I know you said its not all in yet.. for a bit over 1500 miles. But heres some first impressions:

I dont know if it has more power, strictly speaking, (its always been a good puller ) but it does seem lots more eager to give me what power it has. Whereas Ive always had to pay fairly close attention to the RPM in terms of getting peak HP out of it, now, not so much. It has a much smoother and more forgiving curve. Ill bet the curves are nearly dead flat, in fact, from 1000 to 1650. I can get full power at any point in that range, without complaint. With the old program, there were three power peaks at around 1200, 1400, and 1650, with 1650 being the biggest, and 1200 being next to useless for all the breathing issues it was showing there. Those are much less pronounced now. It pulls down low now, without any effort or complaint thats always been the hole in this engine, far as I was concerned.

It still pulls at 1650 or so, but since the thing has no really pronounced power peaks anymore and gives me full power at midrange, hitting that higher RPM isnt really required for good hill climbing. Amazing, given it wouldnt allow me to pull below 1300 at all, just a short time ago, without coughing spitting and generally being a problem. . Im still playing with this aspect and learning it, but Im very pleased with the change.

It spools up boost far easier than it ever has. Im seeing boost rates of 35lbs under full load situations, across the RPM range. I saw that only rarely before, and then only at very specific RPMs.. Far more aggressive.

At the same time, I notice a far faster fall off in fuel consumption(by way of the MPG readout) when I get off the throttle. These are short term peaks, but I was curious, so I decided to try an experiment; Theres an hour long stretch of road (11&15 along the river getting into Harrisburg) that I run rather a lot. I usually run this at 55 or so in top gear, trying for mpg. Its a very flat stretch, so it doesnt strain the engine, even with the old program. It just kinda loafs along. Engine is at around 1225, and usually gives me an MPG readout of around 7-9 at peak. Last night, it seemed to stay between 10 and 12 for that stretch. Unusually high. And it never seemed to want a lower gear.

Another example:I had an empty trailer tonight, on I-90 at Indian Castle. For the first time ever, I marched over the thing in top gear, overdrive, on the cruise control. Simply amazing.

Exhaust gas temps are lower on average, regardless what youre doing.. Normal operating temps seem to be holding around 400, and are not nearly as sensitive as they used to be. Highest I noted was going up the big hills on 15, where it got to around 850. I note it did cool off faster after a hard tug. I can only assume its the added air being pushed through the engine. Im interested to note that Exhaust temps never hit 900, which they often did with the old program when I was pushing the engine hard.

Head temps too, are lower. Hard slogs long at 13-1400 would get the fan going every time.It seems quite happy to pull at midrange, now, and doesnt work up a sweat doing it. Im not sure how much of this is the cooler weather, but Im quite sure that not all of it is the weather, particularly given the Exhaust temps seem to agree with the head temps.

No smoke at all was observed out the stacks. After my experience with the intercooler you can imagine I watched for signs of over-richness. I saw none, regardless of what I had the engine doing.

I just finished my first trip last night, and with the fill, after 1100 or so miles, I find Im getting 6.377 to the gallon. before it was usually high 5s to very low 6s if I recall right but at the very least the new package isnt killing the MPG, while adding whole bunches of drivability.

I feel Im driving a new truck; the personality of the engine has totally changed for the better. I cant imagine that wont get better as I learn to drive this thing (As opposed to just operating it we go through that learning process with every new vehicle) and I wonder about the parts of the program you say arent in there yet. Does this really get better?
[FONT=&quot]Yes, you could say Im impressed. [/FONT]
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Thanks for the detailed post. I never had an ISX but am considering buying one, a 2006.What year is yours? What trans and rear ratio so you have?

I loved the PDI tune in my ACERT Cat. I didn't start getting better fuel mileage until I learned to drive it differently.

joey8686 · Mar 1, 2019

SHC said: ↑

Honestly just the increased performance has made me happy. I'm excited to see how much of an increase I get with the new turbo and manifold.
Click to expand...

How the F would you get 7.44mpg, what mods did you have done to the MBN ? I have one now and if I idle at night I get 3.7mpg hauling cattle at usually 100000lbs but half time is spent empty, no idling and I get 4-4.5

Brettj3876 · Mar 1, 2019

I don't think your gonna get a reply from him......8 years ago lol

fortycalglock · Mar 1, 2019

joey8686 said: ↑

How the F would you get 7.44mpg, what mods did you have done to the MBN ? I have one now and if I idle at night I get 3.7mpg hauling cattle at usually 100000lbs but half time is spent empty, no idling and I get 4-4.5
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You’re not gonna get a response from him because he’s no longer on TTR. That was also two trucks ago for him and now he drives a Detroit powered Peterbilt. He also never hauled a cattle pot, mainly flatbed

joey8686 · Mar 2, 2019

Brettj3876 said: ↑

I don't think your gonna get a reply from him......8 years ago lol
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Lol ya but you guys are still looking and replying...... Obviously it’s an old post maybe they should get deleted after so many years

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