03-08-2020, 03:02 PM | #2 |
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03-08-2020, 08:43 PM | #3 |
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03-09-2020, 11:14 AM | #4 |
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It tricks the ECU to make changes to some parameters (boost, AFR, timing,etc...)
It also connects to Canbus which gives it the ability to add features like boost by gear, boost by RPM, safety failsafe,etc...
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03-09-2020, 11:26 AM | #5 |
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Can the jb4 work without the obd connection? I read somewhere were they say it can and the obd connection is only for the gauge control thing. Like switching using the built in stalks and speedometer gauge
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03-09-2020, 02:26 PM | #6 |
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Yes, I was looking for the figures, or there abouts, of what is changed for each map.
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03-09-2020, 02:41 PM | #7 | |
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Map1: Additive map with peak of 3psi over stock added (91 octane) Map2: Additive map with peak of 4psi over stock added (91-93 octane) Map3: Additive map with peak of 6psi over stock added (93+ octane) Map4: Additive map with peak of 6.5psi over stock added (93+ octane) Map5: Additive map with peak of 6psi over stock added & more aggressive timing profile for higher octane fuel (experimental, 93+ octane, bolt on modifications) Map6: Custom tuning map allowing both additive (below 10psi) and absolute (above 10psi) targeting Map7: WMI map (boost varies based on WMI additive and map settings) Map8: VALET / Low Boost Map
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03-09-2020, 03:27 PM | #8 |
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Hi Mike
Thanks for the continued replies. I've seen those figures, but, maybe I'm reading them wrong here, is the 3psi for Map1 just in increase in turbo pressure - no change to timing or anything else? The reason I ask is, I had my old car remapped - reprogrammed ECU. The gearbox spat a tooth shortly after. I'd like to get a better understanding of what is actually changed before I risk the same decision again. I know the B58 in my G29 Z4 M40i can do a lot better though! |
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03-11-2020, 10:55 AM | #9 | |
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03-11-2020, 11:27 AM | #10 | |
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07-17-2020, 11:16 AM | #11 |
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Does anybody know what's needed for Map 4? Is it ok to run on a stock 2019 m340i? Looking for max power without upgrading anything.. thanks
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07-17-2020, 01:03 PM | #12 |
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The JB4 includes full diagnostics in the app so record ad JB4 log and post it here and I can tell you if it looks safe or not. The map used has mostly to do with the octane being used and what the factory software is.
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07-17-2020, 02:35 PM | #13 |
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Will you be kind enough to do that for a measly 330i as well? I’m running map 2 now with ~E30 mix. I wanna know if map 3 is better because sometimes, I feel map 3 is better and at other times, map 2 seems to pull harder. No other mods other than a JB4.
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07-17-2020, 07:01 PM | #16 |
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07-18-2020, 07:00 AM | #17 |
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Drives: 2020 M340i
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Get an account on datazap.me, upload the csv there (make sure it's set to public), and post the link here
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07-18-2020, 12:29 PM | #18 | |
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Edit - https://datazap.me/u Let me know if that works Edit 2 - https://datazap.me/u/vipinlj/logging-run?log=0&data=1-4 https://datazap.me/u/vipinlj/logging...log=0&data=1-4
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07-18-2020, 05:37 PM | #19 | |
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07-18-2020, 06:49 PM | #20 |
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Yes sir. Will do. I’ll post that up as soon as I get logs
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07-18-2020, 09:48 PM | #22 |
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It's been out since 2008 lol. If you want a lot of power and features without having to void warranty with a flash the JB4 is the best way to get there. If you want exhaust pops and bangs you're going to have to bite the bullet and reflash it.
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