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Just installed the ProBitz Tuner yesterday and I'm already noticing an increase in mpg and torque. I'll continue to post results.
 

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Just did a test drive of 22 miles and showed an avg 33 mpg vice a normal 26 I might get. Pro Bitz is def worth the buy.
 

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Just a heads up, these type of piggyback fueling modules will fool your heads-up-display to read ridiculously high mpg numbers. You'll need to hand calculate over multiple tanks to get any useable data. Those kind of mileage gains 'hand calculated' from tuning are not typical.

Nick
 

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And why is that? If I traveled 300 miles and burned 40% of a 25 gallon tank that's 30 mpg. Short of siphophoning out the gas and seeing how much is left, what kind of "hand calculating" do you propose? Are you saying the way the tank is being measured on the instrument panel is wrong bc of the tuner? If you travel a set distance and there's a certain percent of fuel PHYSICALLY remaining.... How is the piggy back tuner be all of the sudden deceiving the cars ecu....?
 

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And why is that? If I traveled 300 miles and burned 40% of a 25 gallon tank that's 30 mpg. Short of siphophoning out the gas and seeing how much is left, what kind of "hand calculating" do you propose? Are you saying the way the tank is being measured on the instrument panel is wrong bc of the tuner? If you travel a set distance and there's a certain percent of fuel PHYSICALLY remaining.... How is the piggy back tuner be all of the sudden deceiving the cars ecu....?
David,
Your logic is sound. Unfortunately you're assuming that the way the vehicle calculates mileage is by measuring the fuel used using the sending unit in the tank. What the vehicle actually does is measure the amount of fuel volume used on each power stroke (in mm3) while looking at vehicle speed, and then integrates those values over the course of your drive. This strategy fails when the piggy back module alters the injector pulse width unbenounced to the engine control module. The engine control module no longer has an accurate volume per stroke being delivered to the engine. Then your fuel used calculation is wrong, and subsequently your mpg stats.

Nick
 

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OK. And your product will offer better? Or its just not possible at all?​
First, I do not have a product for this platform yet. I am actively developing and am excited about these jeeps. Currently, however I have nothing to offer you.

Second, I've been a professional diesel tuner for seven years. What I can tell you is that these piggyback modules are always first two new markets. They are always the first to get dropped once we get up and running. They do okay if you're looking for a quick power up. However, they cannot control all vehicle systems to the same level as the factory can, and we will be able to. Also they have a pile of extra connectors and wires which introduce unnecessary failure points.

All I'm suggesting, is that you hold off for a month or two and see how far we get in our development. Like I said, I have a jeep and a four-wheel-drive Dyno – and am actively working. Do a little research on how we perform in the Duramax community and you'll see what I mean. Expect data-driven performance from us. Also expect a full review of the competition. I have no problem testing their products against ours.

Nick
 

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WIJeep,

I'm into the ECU, and have mapped boost, timing, EGR, fuel, etc. I am currently running a tune on my Jeep without issue. I'm tuning and tweaking to get a good balance of power, driveability and shift quality. I expect to have some preliminary dyno numbers in a week.

I've also tested the Steinbauer module, so I can share my thoughts on how it compares when I do the preliminary results writeup.

Thanks for your interest,
Nick
 
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