[rrrrryan]

Hi guys, I just have the jb4 installed on my is300 fsport and did some logs on different maps, if I could have them looked at and custom tuned that would be much appreciated.

only other mod is K&N panel filter and running RON98 fuel.

[Terry @ BMS]

Runs look fine to me, you can stick wit map5 if its running well on your end.

[rrrrryan]

Originally Posted by Terry @ BMS

Runs look fine to me, you can stick wit map5 if its running well on your end.

Thanks Terry, I'm currently running on map 2 and will try map 5 now, if map 5 run well I'll stick on it, otherwise should I switch to map 2 or 1?

How many psi over stock is each above map requesting?

[Terry @ BMS]

You can look at "target" in the log to see. Map5 is requesting 6psi over stock there but you're getting less than that due to the small factory turbo.

[rrrrryan]

Originally Posted by Terry @ BMS

You can look at "target" in the log to see. Map5 is requesting 6psi over stock there but you're getting less than that due to the small factory turbo.

Hi Terry I have 2 other Lexus friends who are interesting in JB4, is the one I'm using universal to all Lexus models? They may try mine before made their decisions.

I have been using map 5 and so far so good. by comparing boosts in Map2 and Map5, they are both pulling around 13psi peak, since Map 5 isn't really pulling 6psi over stock due to factory turbo limitation. Is there any other differences between Map2 and Map 5?

Do I need to turn the engine off each time before switching between Maps? And what happen if the car was running without the OBD connector plug in?

[Payam @ BMS]

The application list is on our website, so you can see what the other models your JB4 is compatible with.

Stick with map 2 IMO.

No need to turn engine off, you can change maps on the fly while driving.
Without the OBD, car will revert to stage 1.

[rrrrryan]

JB4 Bluetooth Wireless Phone/Tablet Connection Rev 3.7 (Pinned Power Wire)

Is this the right one for my lexus JB4? I should get this bluetooth kit at the beginning.

[Terry @ BMS]

Don't know, check the website which has photo of the two board types to see which JB4 mobile adapter you specifically need. But most likely it's the pinned power wire.

[ciffert]

Good Evening all. I just received my JB4 for my NX200t and installed it. Seems like a nice power bump, however is it normal for the in dash boost gauge to not show how much boost is actually there? Before the JB4 It was running on Sport mode up to 1.5 Bar, now it barely reaches 1 bar. I have not tried any other Maps yet. I have the AEM Cold Air intake, The HPS Hot Pipe and in a week or two adding the Apexi N1 Evolution Full *** Back Exhaust. Any suggestions before I start tuning? 93 Pump gas. It seems map 2 or 5 are the way to go?

[Terry @ BMS]

Yes, the ECU will think it's making less boost than normal so that is expected. If you have a JB4 log we can confirm the tuning is working as it should be.

[ciffert]

Once I get out of the house today I will start some logs. Thanks.

[Swift685]

I have a Lexus NX300 with a new JB4 with Bluetooth and the latest Firmware on the Mobile app.

I looks like I have 8 maps to choose from, my question is what is the difference between each map?... the info here seems to be older in some cases as my maps don’t seem to line up perfectly with some of the boost / target figures I’m seeing.

My “target’s” are showing up as:

Map 0 – Stock?
Map 1 – Target 3 (3 PSI?)
Map 2 – Target 4 (4 PSI?)
Map 3 – Target 5 (5 PSI?)
Map 4 – Target 5….?
Map 5 – Target 5….?
Map 6 – Target 2 (Custom by RPM?)
Map 7 – Target 6 (6 PSI?)
Map 8 – Target 3….?

Can anyone tell me what the current Maps are?

[Swift685]

Also, what does the "Boost Safety" setting do?.... I'm using Map 2 with a Target of 4 and Boost Safety of 4 and my target still jumps up to 5 so I'm lost.

[Terry @ BMS]

It's the min boost before the JB4 will disable, but I don't think it's enabled in the Lexus firmware yet, since over boosting has not been an issue at all with that tiny turbo.