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| 07-27-2020, 01:02 PM | #1 |
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Speed Freak
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Ditch JB4 for BM3?
Should I swap my JB4 for BM3? I have a 2013 BMW 535xi FBO. Runs good, just wondering if BM3 would get a little more power.
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2013 535xi M Sport - JB4/Ethanol - VRSF DP - ER Charge Pipe - Remus Exhaust - BMS Intake - HRE Wheels - BPM Sport Coded - H&R Springs
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| 07-27-2020, 03:25 PM | #2 |
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Second Lieutenant
 
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Most of the reviews say BM3 or MHD are smoother and better driving than any piggyback. And yes, typically a little more hp/tq can be made. I’ve seen some people keep the JB4 and the tune for maximum control.
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| 07-27-2020, 05:21 PM | #3 |
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Major
 
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ditch it. MHD David Shoup. BM3 Kevin Baldi. Case closed
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| 07-28-2020, 08:27 AM | #4 |
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What about keeping the JB4 with an MHD Back End Flash?
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2013 535xi M Sport - JB4/Ethanol - VRSF DP - ER Charge Pipe - Remus Exhaust - BMS Intake - HRE Wheels - BPM Sport Coded - H&R Springs
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| 07-28-2020, 11:30 PM | #5 | |
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| 07-29-2020, 07:58 AM | #6 |
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Joint Chiefs of Staff
 
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I'll be happy to sell you a bootmod3 license, but if you are happy with the Jb4 i would not change it
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| 07-29-2020, 08:24 AM | #7 |
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Major
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Change that crap! All that gives is problem but really if you want factory like power delivery and smoothness to power curve then go bm3.
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| 08-01-2020, 08:59 AM | #8 | |
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| 08-01-2020, 01:10 PM | #9 | |
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Last edited by ziekxq; 08-01-2020 at 04:41 PM.. |
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| 08-01-2020, 08:59 PM | #10 | |
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