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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > past and present jb3 users



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      10-03-2012, 05:13 AM   #1
shogun14z
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past and present jb3 users

just installed a jb3 on my 07 335i. i was wanting to know everyones experinceses who ran this tuner. what map worked best? what problems did you have with it? currently running map 5 with only bms dci's and forge dvs. have a set of vrsf dp waiting for install. also waiting on vrsf 5" fmic to become available. Just trying to pick everyones brain. thanks in advance.
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      10-03-2012, 06:03 AM   #2
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jb3 is pretty old. you should have got jb4 at least. jb3 had issues with overboost/underboost codes depending on weather.
Also with your mods i would run map 3.
Search , tons of threads about jb3 if you are wondering something.
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      10-03-2012, 08:24 AM   #3
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thats the problem i have searched, and like you say there are tons of threads. problem is i cant find one that answers my question. thanks for your reply.
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      10-03-2012, 08:56 AM   #4
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you need to upgrade to the JB4 (as enrita stated) as I don't believe BMS is even supporting (firmware and such) the JB3 any longer.

The JB4 is much more advanced than the JB3...night and day.
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      10-03-2012, 09:06 AM   #5
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i agree bigdaddycane but the point of this thread is what map should i be running based off past and present users who have or are running the jb3. not what tuner do i need. on a limited budget. got what i could afford at the time. now i need some help on some old shit.
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      10-03-2012, 09:58 AM   #6
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i already told you, map 3. Get an intercooler and run map 5, get also downpipes and run map 7 . Try running always 93 octane since stock ignition is quite aggressive for the boost you will get.
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      10-03-2012, 10:03 AM   #7
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Quote:
Originally Posted by shogun14z
i agree bigdaddycane but the point of this thread is what map should i be running based off past and present users who have or are running the jb3. not what tuner do i need. on a limited budget. got what i could afford at the time. now i need some help on some old shit.
You should run map 3 if your premium gas is 91 octane. If your premium gas is 93 octane you can run map 5 for a bit more boost. For what its worth, I ran map 5 on 91 octane gas (was not recommended by Terry, just took a risk) and for whatever reason my car handled it just fine for countless pulls over a stretch of about 10,000 or so miles.

As soon as you are able, get up to date with JB4 (same tuner, current version of product) so that you can play with different mixes of premium and e85 for even more power.

Have fun, welcome to the addictive world of boost. Never is ever enough, all it takes is trying it once
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      10-03-2012, 10:04 AM   #8
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the best BMS maps are the jb4 maps

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      10-03-2012, 10:38 AM   #9
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I have a factory upgraded 15ohm jb4 I can sell you for $100 shipped.

It is the unit (black box) only. No harness or extra cables
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      10-03-2012, 10:39 AM   #10
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Quote:
Originally Posted by shogun14z View Post
i agree bigdaddycane but the point of this thread is what map should i be running based off past and present users who have or are running the jb3. not what tuner do i need. on a limited budget. got what i could afford at the time. now i need some help on some old shit.

I did the same thing....so I understand the budget thing. I can't even remember what maps I ran on JB3

if you can scrape together $150 its worth the upgrade.
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      10-03-2012, 10:45 AM   #11
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found this in the user manual pdf on their site.

Map 0: --Disables JB3, all signals pass through
Map 1: --Low boost map, boost levels of 11-13psi depending on mods and weather --Self adapts
to modifications like intake, downpipes, exhaust, etc --91 octane RM2 or higher required. The
higher the octane, the more power.
Map 2: --Performance map, boost levels of 12-14psi depending on mods and weather --Self
adapts to modifications like intake, downpipes, exhaust, etc --91 octane RM2 or greater required.
The higher the octane, the more power.
Map 3: --Identical to map 2 with additional low end response (aka lagfix)
Map 4: --Hotter Performance map, boost levels of 13-15psi depending on mods and weather --
Self adapts to modifications like intake, downpipes, exhaust, etc --93 octane RM2 or greater
required. The higher the octane, the more power.
Map 5: --Identical to map 4 with additional low end response (aka lagfix)
Map 6: --Designed to optimize bolt on performance --93 octane RM2 or greater required. The
higher the octane, the more power. --Richer midrange air/fuel ratios to sustain additional torque --
May trigger hidden tuner detection codes. Purchase a Bavarian Technic cable from BMS to scan
for and delete any hidden codes before service.
Map 7: --Identical to map 6 with additional low end response (aka lagfix)


get a jb4 already. I also have 15 ohm Jb4 black box only for sale
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      10-03-2012, 01:03 PM   #12
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Quote:
Originally Posted by nailer335 View Post
You should run map 3 if your premium gas is 91 octane. If your premium gas is 93 octane you can run map 5 for a bit more boost.
This is correct for the JB3.
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      10-03-2012, 02:09 PM   #13
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JB3 worked great, until you ran into higher boost levels on a 6MT then you bogged during upshifts. Admittedly, Procede was a little better for this issue, but it still happened, just not to the extent of the JB3.
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      10-03-2012, 02:21 PM   #14
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The JB3 is very obsolete and no longer compatible with BMWs newer software updates. Which means you'll get check engine lights and other headaches. If you can't afford to upgrade to a JB4 I would probably leave it on the garage desk until you can.

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      10-03-2012, 05:33 PM   #15
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tofu and rotorocious i have the pin out version and doubt the jb4 box will work with that harness. everyone thanks for your help. also here in BFE where i live there is no access to 93 octane or e85. ran the car on map 5 for 2 days and no problems but sounds like i better put it on 3. thanks again everyone.
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