05-22-2022, 06:28 PM | #1 |
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Does the JB4 map2 really require exhaust mods?
Just wondering if anyone knows what the JB4 map2 actually requires, the documentation just says exhaust modifications (like dp) but what I've been reading that those dont make a huge difference anyway since the stock M4 exhaust is already pretty effective. Just wondering if i can try map2 so i can compare to the map1 that im running now, or if i should wait. Thanks.
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05-23-2022, 08:11 AM | #2 | |
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JB4_S55 Map Guide as of v1_8_4 firmware: Map 0: Disable JB4 / Full Pass Through Mode Map 1: Stage1 map adding approximately 40whp and 40wtq across the power band on pump gas. Suitable for all stages and fuel mixtures. Map 2: Slightly more aggressive version of map 1 intended for vehicles with bolt on modifications and 93+ octane fuel. Can also be used with E85 and racing fuel mixtures. Fuel pressure connector suggested. Map 3: Slightly less aggressive version of map 1 intended for vehicles running on lower grade fuels such as 91 octane. Map 4: Low boost / VALET / Safety Map Map 5: //M low torque ramp power up to redline Map 6: User defined map generally only used for diagnostics or troubleshooting. Map 7: Race gas map. Requires 100 octane unleaded fuel and for the fuel mass connector to be installed. Can be used with or without the EWG connectors but will make more power with the EWG connectors installed. This map can also be used with up to 35% E85 but in some vehicles & conditions this may cause a high fuel pressure drop and resulting stuttering. If this occurs drop down to map 2. Map 8: WMI map. Requires FSB controller for progressive mapping and safety systems. For pump gas a meth additive of 30-40 is suggested while for race gas/E85 + meth up to a 75 additive can be used. The higher the meth additive the more aggressive the boost curve. A meth additive of 60 would be roughly equivalent to map 7.
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10-19-2022, 10:27 AM | #3 | |
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Those that mean I could run Map 2 with 93 octane and no DP without any problems ? occasionally adding 3 to 4 gal of e85 when available. I do have AA EL Mid pipes on my ZCP and K&N drop in air filters with charcol filters removed. I always thought DP was a most with Map 2 according to BMS but some people do it without DP .... When did BMS removed this requirement ? |
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10-19-2022, 12:20 PM | #4 | |
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Bolt-on modifications means downpipes, charge pipes
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10-19-2022, 12:53 PM | #5 | |
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But could I run Map 2 with 93 octane and no DP without any problems ? occasionally adding 3 to 4 gal of e85 when available. I do have AA El mid pipes though |
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10-19-2022, 01:16 PM | #6 |
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its not recommended but a lot of people run it anyways and they show clean logs
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10-19-2022, 01:19 PM | #7 |
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10-19-2022, 01:51 PM | #8 | |
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https://mad-us.com/mad-bmw-s55-catte...-flex-section/
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10-19-2022, 06:13 PM | #9 | ||
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10-21-2022, 12:56 PM | #10 |
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11-02-2022, 09:57 AM | #11 |
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12-01-2022, 11:13 AM | #12 |
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What's the difference between your "fat boy" and normal DPs for the S55? Does the fat boy work with stock exhaust? Is that one available for immediate shipping? Any discount for board members? thx
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12-01-2022, 12:20 PM | #13 | |
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You just missed our Black Friday deals but you can use Code "MAD"
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