JB4 for 2018+ Jeep Wrangler/Cherokee 2.0L
 

Working on setting this thread up. A lot of the information below is from our Alfa JB4 which shares the same engine platform and will be updated with Jeep specific information in the near future!

Use subject to terms and conditions posted at http://www.burgertuning.com/terms.html

THIS PART IS LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AS DEFINED UNDER CALIFORNIA LAW, AND IS NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE. California law defines a "racing vehicle" as "a competition vehicle not used on public highways." (Calif. Health & Safety Code 39048) This part may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event. Competition-only motor vehicles may not be driven to a racing event on a public highway and must be transported on a trailer or other carrier. USE OF THIS PART IN ANY OTHER VEHICLE MAY SUBJECT YOU TO FINES AND PENALTIES FOR VIOLATION OF FEDERAL AND/OR STATE LAW, WILL VOID YOUR WARRANTY FROM BURGER MOTORSPORTS, INC, AND CAN VOID YOUR VEHICLE'S WARRANTY. It is your responsibility to comply with all applicable federal and state laws relating to use of this part, and Burger Motorsports, Inc hereby disclaims any liability resulting from the failure to use this part in compliance with all applicable federal and state laws.

By default the JB4 ships on map1. For higher boost map, logging, firmware updates, and other features, you'll need a JB4 Mobile adapter for wireless connection to your phone or a BMS data cable for wired connection to a laptop.

JB4 Mobile Smart Phone wireless connection directions Click here.
BMS data cable hard wired directions Click here.

Installation guide Click Here

Map guide as of v3 firmware (selected via JB4 Mobile/laptop interface. Map1 is the default map)

Map 0: JB4 disabled
Map 1: 4psi over stock tapering to 2psi at redline.
Map 2: 5psi over stock tapering to 3psi at redline
Map 3: 6psi over stock tapering to 4psi at redline
Map 4: Coming soon!
Map 5: Coming soon!
Map 6: User adjustable map
Map 7: Coming soon!
Map 8: VALET / Low Boost map

Firmware:

JB4_JEEP_1:

Initial platform firmware

Brandon at Krazyhouse Customs dyno testing our new Jeep 2L JB4 out on his dyno. Solid results on 93 octane vs. stock and got even better on an E30 mix! Will post the E85 mix runs after we make a few more tweaks to it!

One of the things that I missed when I got rid of my 135i (N54) was the JB4 and it's simplicity... Now that I have a 2019 JL Rubicon... BMS will soon be back in my life! Thanks Terry!

-Jeff

Logs from Jeep
 

Hi Terry,

Here are a couple logs. 91 octane (best available locally).

Jeep feels strong.

Also found this which makes a good place to mount the JB4 close enough for the OBD2 wiring to reach.

JL Audio SBA-J-JL-FHB - Jeep Wrangler '18-Up Accessories

Looks normal to me for the platform. Have access to E85? You could mix in a few gallons to get octane up for comparison.

********
 

Hi Terry,

Will a test pipe trip the CEL? And if so I guess a piggyback can't really deal with that can it?

This just came out and looks like the first step to get some more power....

Twisted Steel Down-Pipe (Race Series) | aFe POWER

Yes, that will cause a CEL to come on.

MAP8 on my Rubicon 2.0T my 2018 (European Version)
 

I have tried the MAP8. This map puts the engine in safety mode.
The maximum speed is 50Km / h.
But it does turn on the engine light and then it doesn't go out anymore.
With the engine light on, maps 1-2-3 no longer work.
Why?
https://www.tuttomotoriweb.com/wp-co...ne-light-1.jpg

Yes, that's called Valet map. Makes the car super slow so when you give it to valet driver they wont go on a little drive with your car.

Put back in map 1 and turn car off and on and it should be back to normal.

The VALET map is still a work in progress. Record a log on map8 (when the light isn't on) and we'll see if we can tweak it next version to run slow without triggering an extra light. :burnrubber:

Many thanks, but I don't think to use the Valet Map.

In any case, as soon as I select map 8 the light turns on.
Then it is difficult to turn off the light.

Air intake system
 

I have tried all three maps, and with the standard air filter they work really well.
If I install AFE Filters 50-70035G Momentum GT PRO GUARD 7 Air Intake System, it seems to me that the engine pushes less. Could it be true?
Thanks

Have a log before and after the intake? Let's see how they look. I really doubt the intake hurts. Although it may not help either.

No, I have nothing, how and what should I do?

Use a dragy to do 1/4 mile runs on stock intake and aftermarket to log and compare differences? If no gain return the intake. :)

I found a test of a week ago, maybe a 0-100 km / h
2020-01-26 10_50_54_Map-3.csv (with standard air filter)
today I did 2 more tests
2020-02-04 13_18_08_Map-3.csv (with AFE air filter)
2020-02-04 13_19_52_Map-3.csv (with AFE air filter)
Can you see if it's better or worse with the AFE filter? :arco::arco:

It looks the same to me.

There is one logging parameter missing currently we need to sort out to better evaluate intakes, charge air temp!

Yes, I have seen that some data is missing.
Even the gear.

Anyway thanks

Hey Terry the factory intake pipe has some resonators that seem to help torque down low before boost comes on.

Most of the aftermarket intakes get rid of them for a nice smooth inlet pipe. But as a result the Jeep doesn't pull hard until into boost.

I had a S&B and that was the challenge. Felt soft down low but I did see more boost at peak over stock - so it was helping, just not where the big heavy Jeep needs it the most :)

Any ETA on getting ICT working?

Also any experience with the AC intercooler fluid chillers?

2020 Cherokee
 

Has anyone done this on a cherokee yet? Was reading on another forum they are much more locked down and this won’t work.

This ! Waiting to order till i see a review in a Cherokee

I just ordered this for my 2019 Jeep JLU Rubicon. Looking forward to reporting back. :)

Any updates??

Sorry for the lack of feedback. The Jeep picked up a nice bump in power. Clearly more grunt across the range. I floored it behind a jaguar suv that merged full throttle and he didn’t pull away. My fiancé said the rush reminded her of our ess tuned x5 50i! I know the x5 was much faster but she got to sinking stomach feeling from the passenger seat so that’s a great sign! 😂

Sweet i literally just got mine in today for my
Cherokee 2.0t. Was the install easy??