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Guys, don't even try E85 unless your tuned for it. Period. No online kit is going to change that. I am developing E85 tuning for these including GPEC5 this summer and have tuned a dozen or so of these JTs in the past 2 months. The factory software has the ability to turn on E85 tuning very...

FYI for potential or existing customers, thanks to the help of a guy who knows how to decipher ECU coding, we now have control of cooling fan settings on both GPEC2A and GPEC5 units. This is a big development! From here on out, I'll be setting most of my customer up for fan temps around 205...

I made a Youtube video that walks through the entire process from PCM removal to datalogging, check it out!

The MPVI4 is USBC to USBC, so at a minimum you would need adaptor.

Updated tuning guide attached to the 1st post of this thread, now includes a summary of what I change in every tune, plus a nice price breakdown for all models and configurations.

You won’t be the first Mac guy who got one just for this 🤣 really any basic one should work. Even used on Marketplace

Yes, but you’ll need windows PC. Some of my customers have had success using a windows emulator on their Mac, but I have no idea how that works as everything I have is windows.

Universal is what you need

All good man! Jeep ownership be like that! 🤣 For what you paid on those mods you’d be at least halfway to a custom engine and trans tune, which is the best way to add power, torque, and response on these. I’m one of the only companies doing them. I’ve got a thread on here and the JL forum that...

Sorry to burst your bubble, but you won’t. Your only difference will be sound. Electronic throttle opening will not respond better as factory pedal mapping is extremely slow on Gladiators. Your air intake temps will likely be higher which will pull timing and throttle body spacer does...

Stock with no tuning 89 will help quite a bit versus 87. Yes. 91-93 will keep any timing from being pulled. You’ll still see a tad of knock retard with 89 most likely. By tad I mean maybe 1-2 degrees If tuned, we can make 87 safer than stock while still shifting torque curve to the left. It’s...

Yeah. Most modern cars are riding that knock sensor hard. But 17:1? I’ve never seen a tune making something leaner than 14.1/14.7 or 1.0 Lambda on anything, especially under 10 PSI of boost. Most tuning these days based on Lambda now too and that would be like 1.16 lambda which would be...

Yes and yes. On a WOT run I often see 3-8 degrees of timing being pulled with 87 in the tank. The hotter the weather and more miles and carbon buildup the engine has, the worse it is. Even my brand new jeep with 500 miles on it when I did tube development would pull 1-2 at WOT on 87 octane. Part...

I don’t know, I don’t do the ECU unlocking part, my part is the calibration/tune itself and then datalog review to make sure your Jeep is running as good as it can. In the USA, there are many companies that support unlocking GPEC2A. Not sure about NZ. GPEC2A ECU has side mounted connectors for...

That isn’t true. Unlocks are permanent. You will need to send it to them for unlock, but then your good to go. Your custom tune can get written over by your service department on accident. If your service ever does a reflash, you simply let me know, do another read with your MPVI device, and I...

Yes everything is remote and emissions compliant so EGR stays in place in the tuning. EGR doesn’t really cause any issues on this but in non emissions testing countries I can change it around if need be. I finished one up for a guy in Australia a few weeks ago. Actually pretty good HP Tuners...

I think it’s a bit extreme to say that cheap gas “kills” these engines. I haven’t heard of a single failure on these related to gas quality. That said, yes; they do run significantly better and safer even just stepping up to 89 octane. On 87 octane in the tank, these constantly are bouncing off...

DI/PI split is the way to go and would be the best setup for every manufacturer out there in my opinion, most of the Ecoboost models I work on are DI/PI split, and with a healthy low pressure side and a couple tuning tweaks, those fuel systems can sustain 500 plus HP. The PUG 3.6 could EASILY...

Updated tuning guide added to post 1 on this thread, HP Tuners changed some of the links for PCM unlock so those are in the guide now.

Capability is there within the tuning but I haven’t been able to do any testing with it yet. Hoping to get E tuning worked out this summer.