to each his own, but did I buy a luxury sports car to be a beta tester over a couple hundred bucks? Nahhhh that’s silly. 
OMG!!! BMS JB4 in the works!
Thread Starter
Super Member
Joined: Oct 2011
Posts: 690
Likes: 84
From: GA
X3 M40i
OMG!!! BMS JB4 in the works!
Guys we did it! From the PM's to, nagging Terry/BMS on the N54 forums, they have finally started working on the JB4. They have a c63s currently at their facility that they are working on and next will be us 43 guys. They also stated they will be looking for Beta testers in the coming weeks. I am so excited that I am about to **** my pants. Good job guys!
http://www.n54tech.com/forums/showth...=28003&page=13
Let the tuning wars begin!
http://www.n54tech.com/forums/showth...=28003&page=13
Let the tuning wars begin!
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Joined: Nov 2017
Posts: 180
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2018 C43
Junior Member
Joined: Feb 2017
Posts: 43
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2016 Mercedes C450 AMG Sport
I'm currently considering purchasing a JB1 ... wonder what the timeline is like for this to actually hit the market and if I should bite the bullet and get a JB1 for this season now and then chop it when the JB4 comes out... if that'll even be possible at the time!
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2018 C43 AMG
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2018 C43
yup, to each his own, but being happy to see someone trash their car is kind of heartless. Why would someone’s misfortune make anyone happy? Even if the misfortune was self inflicted. Like being happy someone crashed because they were speeding. Everyone speeds at one point or another. I’d say JB4 could potentially be safer than JB1 or Racechips for that matter if it monitors AFR and keeps those values in check. Not saying I’m sure JB4 would monitor AFR in our cars but it does have that capability in other cars.
Thread Starter
Super Member
Joined: Oct 2011
Posts: 690
Likes: 84
From: GA
X3 M40i
Not sure but if JB1 is only tapping into Boost and 18bora is making over 60+hp and 80+tq then I can only imagine what a JB4 can do with measuring A/F, timing, boost and other stuff. Plus like the BMW guys, you can use JB4 to cancel the CEL for downpipes and you can also adjust parameters to get max gains out of them. I been holding off on installing my downpipes because I was going to get an ECU tune but now I can just use the JB4 if BMS sets it up like how the 335i/340 guys use it.
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Joined: Feb 2017
Posts: 703
Likes: 136
From: Northeast, USA
GLC43, GTI, X3, Mazda3
Guys we did it! From the PM's to, nagging Terry/BMS on the N54 forums, they have finally started working on the JB4. They have a c63s currently at their facility that they are working on and next will be us 43 guys. They also stated they will be looking for Beta testers in the coming weeks. I am so excited that I am about to **** my pants. Good job guys!
http://www.n54tech.com/forums/showth...=28003&page=13
Let the tuning wars begin!
http://www.n54tech.com/forums/showth...=28003&page=13
Let the tuning wars begin!
I never tuned my Bimmer, but always saw/read good things about BMS/Terry on those forums. Guess I'll hold off on the Renntech and see what this brings...perhaps get comparable performance and have some $$$ left over for an exhaust or dp. 
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Joined: Jun 2017
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C43 AMG Coupe
yup, to each his own, but being happy to see someone trash their car is kind of heartless. Why would someone’s misfortune make anyone happy? Even if the misfortune was self inflicted. Like being happy someone crashed because they were speeding. Everyone speeds at one point or another. I’d say JB4 could potentially be safer than JB1 or Racechips for that matter if it monitors AFR and keeps those values in check. Not saying I’m sure JB4 would monitor AFR in our cars but it does have that capability in other cars.
Senior Member
Joined: Jan 2018
Posts: 261
Likes: 70
2018 C43 AMG
anyone know if jb4 will be able to remove the speed limiter? I was able to remove the limiter on my charger with a handheld piggyback, wondering if its possible for to do the same without a ECU flash
Last edited by C43Ayemgee; May 18, 2018 at 01:38 PM.
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Mercedes-Benz E63s AMG
I don't think piggybacks can remove speed limiters. You'd need an ECU flash to do that. But I've also never seen a handheld piggyback... you probably had a handheld ECU flashing device...
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2020 GLC 63
Guys we did it! From the PM's to, nagging Terry/BMS on the N54 forums, they have finally started working on the JB4. They have a c63s currently at their facility that they are working on and next will be us 43 guys. They also stated they will be looking for Beta testers in the coming weeks. I am so excited that I am about to **** my pants. Good job guys! http://www.n54tech.com/forums/showthread.php?t=28003&page=13
Let the tuning wars begin!
Let the tuning wars begin!
Regardless of the tune/tuner, you're always taking a risk anytime you modify a car, and don't be fooled by tuners who offer "warranty", read the fine print and good luck if you ever have to use it. No one if forcing anybody to tune their car and It's very simple, if you can't take any risk, keep your car stock.
Thread Starter
Super Member
Joined: Oct 2011
Posts: 690
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From: GA
X3 M40i
I am hoping it comes out by end of June/July. Terry already stated he may need local beta testers in a week or two. It took them no time to bring out the Kia Stinger jb4 and q50/q60, so iam hoping sooner than later so i can get these freaking downpipes installed before summer ends.
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2016 Mercedes C450 AMG Sport
I am hoping it comes out by end of June/July. Terry already stated he may need local beta testers in a week or two. It took them no time to bring out the Kia Stinger jb4 and q50/q60, so iam hoping sooner than later so i can get these freaking downpipes installed before summer ends.
anybody hear anything on timeline to production?
