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      01-24-2020, 11:20 AM   #1
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Talking Burger tuning bms s58 jb4 for 2020+ bmw x3m/x4m



Gains are 60whp/80wtq on pump gas and up to 100whp/120wtq on higher octane or E85 mixtures.

The ultimate tune for your S58 powered vehicle, the JB4 allows you to go from factory stock to full race, and everywhere in between, with the push of a button on your steering wheel. The JB4 installs and removes easily and includes many unique features not found in any other tune including user adjustable 1st and 2nd gear boost limiting, map switching in dash, electronic wastegate control, ethanol fuel support, and built in advanced CANbus based diagnostic tools. Installation is completely removable with no splicing or cutting of factory wires.

For the latest performance results, updates, firmware, and map guide be sure to visit N54tech.com.

Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. Separate JB4 Mobile app purchase also required.

FEATURES AND BENEFITS
• Gains are 60whp/80wtq on pump gas and up to 100whp/100wtq on higher octane or E85 mixtures.
• Quick Plug & Play Installation
• CANbus integration offering unrivaled tuning features and performance
• Runs as smoothly as stock, this is how your BMW should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• Not VIN locked, can be removed without a trace and resold down the road
• Made in the USA
• Free USA Shipping
• 5 year warranty


S58 JB4 Applications

BMW X3M
• 2020+ S58 X3M
• 2020+ S58 X3M Competition

BMW X4M
• 2020+ S58 X4M
• 2020+ S58 X4M Competition


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      01-24-2020, 11:47 AM   #2
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Price? Advantage/disadvantage vs. Racechip GTS black?

(And were those Dragy numbers at 1400’ above sea level and 90 degrees?? Should expect even better numbers at 0’ and cooler temps, no? 10.7 sec 1/4 mile? Would be very impressive!)

Last edited by SWOT1; 01-24-2020 at 11:58 AM..
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      01-24-2020, 12:10 PM   #3
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Quote:
Originally Posted by SWOT1 View Post
Price? Advantage/disadvantage vs. Racechip GTS black?

(And were those Dragy numbers at 1400’ above sea level and 90 degrees?? Should expect even better numbers at 0’ and cooler temps, no? 10.7 sec 1/4 mile? Would be very impressive!)
Im not allowed to post pricing on here, you can check price on our website

Jb4 is the most advanced piggyback. includes features like datalogging, code reading and deleting, phone access (Bluetooth), boost by gear, boost by RPM, full custom map,etc...

We offer it with 14 days money back guarantee if you wish to give it a try
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      01-24-2020, 02:38 PM   #4
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Quote:
Originally Posted by SWOT1 View Post
Price? Advantage/disadvantage vs. Racechip GTS black?

(And were those Dragy numbers at 1400’ above sea level and 90 degrees?? Should expect even better numbers at 0’ and cooler temps, no? 10.7 sec 1/4 mile? Would be very impressive!)
Yes those 0-60 numbers do look a bit suspect :thumsup. Sure it wasn't 5.5 to 60 stock?
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      01-24-2020, 07:06 PM   #5
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Quote:
Originally Posted by Shadowdemon1 View Post
Yes those 0-60 numbers do look a bit suspect :thumsup. Sure it wasn't 5.5 to 60 stock?
Uhhhhh wut? So just as fast as the 4 cylinder X3 model?
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      01-24-2020, 08:48 PM   #6
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Maybe some can chime in on this but it's my understanding that the Competition is purely a tune adjustment in terms of the hp gain and any piggyback installed isn't adding their claimed gains on to the 503 hp but adding onto the base 473hp of the core model.

Thoughts?
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      01-24-2020, 09:38 PM   #7
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Quote:
Originally Posted by Thewolfbmw View Post
Maybe some can chime in on this but it's my understanding that the Competition is purely a tune adjustment in terms of the hp gain and any piggyback installed isn't adding their claimed gains on to the 503 hp but adding onto the base 473hp of the core model.

Thoughts?
Most who have dyno'd the X3MC are showing 540-550hp stock (well above the obviously underrated claims by BMW), so JB4's claims of 60+hp or 600-610hp seems very realistic compared to the numbers produced from the other piggyback tunes.

I too am more concerned with the "easy install" claim, as the videos I've seen with other piggybacks show this is NOT an "easy" install on the S58, and probably takes 45-60+ minutes.
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      01-24-2020, 10:16 PM   #8
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Quote:
Originally Posted by SWOT1 View Post
Quote:
Originally Posted by Thewolfbmw View Post
Maybe some can chime in on this but it's my understanding that the Competition is purely a tune adjustment in terms of the hp gain and any piggyback installed isn't adding their claimed gains on to the 503 hp but adding onto the base 473hp of the core model.

Thoughts?
Most who have dyno'd the X3MC are showing 540-550hp stock (well above the obviously underrated claims by BMW), so JB4's claims of 60+hp or 600-610hp seems very realistic compared to the numbers produced from the other piggyback tunes.

I too am more concerned with the "easy install" claim, as the videos I've seen with other piggybacks show this is NOT an "easy" install on the S58, and probably takes 45-60+ minutes.
I was under the impression that the piggybacks negated the Competition's enhanced HP over the core.

I agree with you on the install...in using the Racechip, I will need to hire someone to install it for me. I just do have the time of tools to do it correctly. My past piggybacks were always done within 10 to 15 mins. This S58 is not going to be the same.
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      01-24-2020, 11:48 PM   #9
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Quote:
Originally Posted by Thewolfbmw View Post
I was under the impression that the piggybacks negated the Competition's enhanced HP over the core.

I agree with you on the install...in using the Racechip, I will need to hire someone to install it for me. I just do have the time of tools to do it correctly. My past piggybacks were always done within 10 to 15 mins. This S58 is not going to be the same.
Maybe you can dragy after install since there are 0 published numbers for Racechip
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      01-25-2020, 09:02 AM   #10
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Fairly worthless without dyno graphs comparing before and after.
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      01-25-2020, 11:38 AM   #11
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I for one am only interested in wheel hp, not calculated crank hp.
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      01-25-2020, 01:56 PM   #12
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Quote:
Originally Posted by clickclickboom View Post
I for one am only interested in wheel hp, not calculated crank hp.
I for one am interested in 0-60, 1/4, rolling times cause hp is for bragging ...
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      01-25-2020, 03:24 PM   #13
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Looks like a nice product. Would you mind posting dragy 100-200km/h? Thanks!
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      01-25-2020, 05:20 PM   #14
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Quote:
Originally Posted by GT500R View Post
I for one am interested in 0-60, 1/4, rolling times cause hp is for bragging ...
Considering the 1/4 mile time slips you shared with your G01 X3 M40i stock before your mods, I'm looking forward to your X3M stock data as well before you tune (if you decide to do so). There really is a lack of formal runs on the F97/98 (mainly dyno and Dragy). It may be a while before your track opens and the weather allows where you live, but would be a helpful baseline.

Regarding the Comp versions, I suspect most of the time differences we see in stock are in the first 60 feet, which comes down more to track, tire, and atmospheric conditions. The interval times have already suggested as much in the few that have been posted. Would still like to see the C&D formal data, but suspect their numbers were instrumented and corrected for DA.

All of the dyno and dragy numbers are fine to look at, don't get me wrong, but once the weather warms, hoping we get some real quarter mile times shared with these various tunes.
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      01-25-2020, 05:23 PM   #15
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At some point they need to stop charging M tax on these things if they want to compete with BM3. Theres no reason this needs to be more than twice the cost of a JB4 for a series car.
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      01-25-2020, 05:27 PM   #16
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Quote:
Originally Posted by Thewolfbmw View Post
Quote:
Originally Posted by SWOT1 View Post
Quote:
Originally Posted by Thewolfbmw View Post
Maybe some can chime in on this but it's my understanding that the Competition is purely a tune adjustment in terms of the hp gain and any piggyback installed isn't adding their claimed gains on to the 503 hp but adding onto the base 473hp of the core model.

Thoughts?
Most who have dyno'd the X3MC are showing 540-550hp stock (well above the obviously underrated claims by BMW), so JB4's claims of 60+hp or 600-610hp seems very realistic compared to the numbers produced from the other piggyback tunes.

I too am more concerned with the "easy install" claim, as the videos I've seen with other piggybacks show this is NOT an "easy" install on the S58, and probably takes 45-60+ minutes.
I was under the impression that the piggybacks negated the Competition's enhanced HP over the core.

I agree with you on the install...in using the Racechip, I will need to hire someone to install it for me. I just do have the time of tools to do it correctly. My past piggybacks were always done within 10 to 15 mins. This S58 is not going to be the same.
https://www.n54tech.com/instructions...b4_install.pdf
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      01-25-2020, 05:56 PM   #17
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Quote:
Originally Posted by knepsterd View Post
Quote:
Originally Posted by Thewolfbmw View Post
Quote:
Originally Posted by SWOT1 View Post
Quote:
Originally Posted by Thewolfbmw View Post
Maybe some can chime in on this but it's my understanding that the Competition is purely a tune adjustment in terms of the hp gain and any piggyback installed isn't adding their claimed gains on to the 503 hp but adding onto the base 473hp of the core model.

Thoughts?
Most who have dyno'd the X3MC are showing 540-550hp stock (well above the obviously underrated claims by BMW), so JB4's claims of 60+hp or 600-610hp seems very realistic compared to the numbers produced from the other piggyback tunes.

I too am more concerned with the "easy install" claim, as the videos I've seen with other piggybacks show this is NOT an "easy" install on the S58, and probably takes 45-60+ minutes.
I was under the impression that the piggybacks negated the Competition's enhanced HP over the core.

I agree with you on the install...in using the Racechip, I will need to hire someone to install it for me. I just do have the time of tools to do it correctly. My past piggybacks were always done within 10 to 15 mins. This S58 is not going to be the same.
https://www.n54tech.com/instructions...b4_install.pdf
Hmm, that looks similar installation to the 1 hour install RaceChip.
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      01-25-2020, 10:49 PM   #18
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Quote:
Originally Posted by knepsterd View Post
Quote:
Originally Posted by Thewolfbmw View Post
Quote:
Originally Posted by SWOT1 View Post
Quote:
Originally Posted by Thewolfbmw View Post
Maybe some can chime in on this but it's my understanding that the Competition is purely a tune adjustment in terms of the hp gain and any piggyback installed isn't adding their claimed gains on to the 503 hp but adding onto the base 473hp of the core model.

Thoughts?
Most who have dyno'd the X3MC are showing 540-550hp stock (well above the obviously underrated claims by BMW), so JB4's claims of 60+hp or 600-610hp seems very realistic compared to the numbers produced from the other piggyback tunes.

I too am more concerned with the "easy install" claim, as the videos I've seen with other piggybacks show this is NOT an "easy" install on the S58, and probably takes 45-60+ minutes.
I was under the impression that the piggybacks negated the Competition's enhanced HP over the core.

I agree with you on the install...in using the Racechip, I will need to hire someone to install it for me. I just do have the time of tools to do it correctly. My past piggybacks were always done within 10 to 15 mins. This S58 is not going to be the same.
https://www.n54tech.com/instructions...b4_install.pdf
Thank you
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      01-25-2020, 10:50 PM   #19
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Quote:
Originally Posted by r33_RGSport View Post
Quote:
Originally Posted by knepsterd View Post
Quote:
Originally Posted by Thewolfbmw View Post
Quote:
Originally Posted by SWOT1 View Post
Quote:
Originally Posted by Thewolfbmw View Post
Maybe some can chime in on this but it's my understanding that the Competition is purely a tune adjustment in terms of the hp gain and any piggyback installed isn't adding their claimed gains on to the 503 hp but adding onto the base 473hp of the core model.

Thoughts?
Most who have dyno'd the X3MC are showing 540-550hp stock (well above the obviously underrated claims by BMW), so JB4's claims of 60+hp or 600-610hp seems very realistic compared to the numbers produced from the other piggyback tunes.

I too am more concerned with the "easy install" claim, as the videos I've seen with other piggybacks show this is NOT an "easy" install on the S58, and probably takes 45-60+ minutes.
I was under the impression that the piggybacks negated the Competition's enhanced HP over the core.

I agree with you on the install...in using the Racechip, I will need to hire someone to install it for me. I just do have the time of tools to do it correctly. My past piggybacks were always done within 10 to 15 mins. This S58 is not going to be the same.
https://www.n54tech.com/instructions...b4_install.pdf
Hmm, that looks similar installation to the 1 hour install RaceChip.
Seems identical to me.
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      01-25-2020, 10:59 PM   #20
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How does this compare to Bootmod3?
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      01-28-2020, 12:14 AM   #21
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Quote:
Originally Posted by smithf80 View Post
At some point they need to stop charging M tax on these things if they want to compete with BM3. Theres no reason this needs to be more than twice the cost of a JB4 for a series car.
+1. With S55 the install was straight forward / quick which isn't the case with S58. Obviously it isn't BMS' fault but BM3 will be the most appealing option on the market once it comes out (given the price will be the same as BM3 S55).
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      01-28-2020, 12:22 PM   #22
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Quote:
Originally Posted by r33_RGSport View Post
Hmm, that looks similar installation to the 1 hour install RaceChip.
yeah im sure it is since they are both piggyback type units. Your racechip seems tried and true on your X3M RG.
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