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Exact difference btw JB3 and J 4??
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01-02-2013, 06:27 AM | #1 |
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Exact difference btw JB3 and J 4??
Ok...so probably a stupid and old question. I just bought a JB3 off a friend and am looking up info on it but all that comes up is JB4 stuff or JB4 (stage 3) info.
Is that what the JB3 actually is? A JB4 (stage 3) and the JB4 most ppl have these days is a JB4 (stage 4)?? I haven't had this car for too long and am new to all the tuning/mod. I'm planning on putting this JB3 in this weekend along with a DCI
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2008 335i - JB4 / BMS DCI / Premium Package / Sport Package / 6AT |
01-02-2013, 07:32 AM | #2 |
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The JB3 and JB4 modules are completely different; the boards are not the same. Ive had both and the JB4 is more advanced and has better maps. Power is much smoother and all the settings are better controlled with the the JB4. The Map 5 auto tune is really good on the JB4.
Also, the JB3 is no longer supported with firmware from BMS. I highly suggest you pay the upgrade fee to go to the JB4, either G4 or G5 boards (latest version), it's that noticeable.
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2011 Mineral White M3 ZCP - Opticoat, Ventureshield, some CF, B&B exhaust, AFE Intake Vorsteiner VFF 101s Ohlins
2014 Mineral White 328d Xdrive Wagon - Opticoat, Ventureshield, B8s, H&R, Apex SM-10s Hawk Pads 2021 718 Cayman GT4 - Fire extinguiser Last edited by bigdaddycane; 01-02-2013 at 07:41 AM.. |
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01-02-2013, 08:26 AM | #4 | |
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Good deal?
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J.D.
2008 335i - JB4 / BMS DCI / Premium Package / Sport Package / 6AT |
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01-02-2013, 08:28 AM | #5 | |
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Is the JB4 more likely to throw codes...? I know it's more advanced and everything. The car is my daily driver and I don't track it. (Yet) I always run 93 octane. Was just planning on running JB3 map 3-4.
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2008 335i - JB4 / BMS DCI / Premium Package / Sport Package / 6AT |
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01-02-2013, 09:32 AM | #6 |
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Yes I think you got a great deal! Enjoy the newfound power.
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01-02-2013, 09:37 AM | #7 |
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I thought so! Got worried when rotorocious asked what I paid...lol
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J.D.
2008 335i - JB4 / BMS DCI / Premium Package / Sport Package / 6AT |
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01-02-2013, 10:27 AM | #8 |
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less likely.....more refined, better controlled....safer.
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2011 Mineral White M3 ZCP - Opticoat, Ventureshield, some CF, B&B exhaust, AFE Intake Vorsteiner VFF 101s Ohlins
2014 Mineral White 328d Xdrive Wagon - Opticoat, Ventureshield, B8s, H&R, Apex SM-10s Hawk Pads 2021 718 Cayman GT4 - Fire extinguiser |
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01-02-2013, 10:43 AM | #9 | |
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Mike |
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01-02-2013, 10:48 AM | #10 | ||
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01-02-2013, 11:14 AM | #11 |
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Just buy a Jb4 board from the forums here and the upgrade power wire from BMS. Ive seen a few boards for sale for like 70 bucks. I maybe selling my JB4 15ohm board soon. PM me if interested
And use the write up here to fix the harness http://www.e90post.com/forums/showthread.php?t=489350 http://www.e90post.com/forums/showthread.php?t=449455 Last edited by e92oholic; 01-02-2013 at 11:22 AM.. |
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01-02-2013, 11:39 AM | #12 |
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JB3 is obsolete.
They are both "stage 3" JB4 is a more sophisticated board and uses CANbus to communicate with the car. To keep things simple it provides safer and more consistent power then the JB3 and its full a many other features. Their website description really says it all: "Now shipping with JB4 featuring 5x the processing power, 2x the memory, more robust signal conditioning, and integrated CANbus. Our new CANbus module allows the JB4 to communicate with your vehicle like never before. New features include code reading/deleting, optional in dash boost, timing, air/fuel, shift light, and IAT gauges, autotuning, a buttery smooth new CANbus based integrated boost control system, map switching on the fly via steering wheel controls, built in downpipe fix, hot/cold oil temperature protection, progressive methanol integration, water pump remapping, gear dependent boost control/traction assist, and much more to come with free firmware updates uploaded using a windows laptop (or mac w/ windows emulator) and BMS USB cable." |
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