DameMD

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!

SoCalC43

What should we expect from the JB4? I have the JB1 currently, and I'm really happy with it.

RichardCranium3

Bazinga!

agchenry

imagine fuel trim control and boost per gear. That alone will be a big plus for our platform

RichardCranium3

I'm more curious about how this is going to shake out for people who just purchased a JB1...

iggs

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!

C43Ayemgee

Well if someone from BMS is reading this, ill happily be a tester for the JB4

FirstMBAMG

C43Ayemgee

Ehh, If its leased, who cares

C43Ayemgee

Have plenty of friends with very modified leases, no problems at all even when problems occur

FirstMBAMG

agchenry

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.

iggs

agchenry

Only Terry can answer that question since the product isn’t out yet

skim7x

I had a JB4 on my e92 (among several other tunes... Dinan, Cobb, Procede, etc). Nobody would even bother with a JB1 in the bimmer world haha... Didn't even know it was a thing...

DameMD

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.

Gungaslow

Chrisk03

Interesting. I've been looking at tunes and trying to decide if I want to go that route or just leave my "baby" stock. The 43 certainly has enough power for everyday driving and I probably will never drag/track it, but it's always nice to kick it up a notch. 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.

Darrington

Subscribing, and selling some car parts to fund this purchase in the meantime!

FirstMBAMG

C43Ayemgee

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

skim7x

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...

18bora

While they are not promising anything in the near future, this is great news for everyone!! including those who are looking for a full tune. Between the JB1 results and now the possible release of the JB4, it will force full tuners to lower their prices to reality >>>>> ($600-$800) ... based on BMW/Audi tune prices.

According to the vid below, it can be done with an SDS scanner


Guess what the V1-tune guys were doing....... beta testing

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.

DameMD

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.

iggs