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BMW 3-Series (E90 E92) Forum
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N54 Public XDF Repository
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| 08-07-2020, 03:26 AM | #89 | |
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Reduce all the cells in the cold start duration table to 0 then disable the two diagnostic codes for cat monitoring (29F4 29F5) |
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| 08-07-2020, 11:14 AM | #90 | |
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| 09-13-2021, 06:14 AM | #91 |
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| 10-02-2025, 09:47 PM | #93 |
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how about a thread explaining some fo the tables ? like the fact the WGDC base table the "Factor" on the column side is the "Boost Setpoint" the DME requests.. i banged my head against a damn wall looking at that table trying to figure out how peopel knew where to modify it.
also the fact that the boost target is primarily set by requested load.. ( at least for MT it is on the load by gear table) and there is a useful boost limit under the MHD options cause target load requested can actually creep up boost target with RPM despite being same requested load ( that was an interesting find luckily the WGDC table and adders prevented as i was seeing 3 degrees correction/retard across all 6 cylinders when it tried to creep to almost 16 PSi target) |
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| 10-02-2025, 10:26 PM | #94 | |
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Instead of tuning boost by load some use the MHD+ Boost ceiling Gear x RPM boost ceiling by Enabling Custom 3D Boost Ceiling. just up the load out of the way. |
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| 10-02-2025, 10:44 PM | #95 | |
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i am using the MHD+ boost limit by gear in conjunction with the load by gear tables right now, trying to keep timing safe though and when think i pulled enough where i will have to add it back: NOPE, but being new i'm not too mad at myself over it cause it isn't drastic corrections either always under 5 degrees. also figuring out the fuel Scalar and how it works with the fuel AFR target. it kind of feels like bandaiding though for STFT numbers.. correct me if i'm wrong but i'm assuming scalar applies a longer pulse width in those RPM/Load regions, by increasing it per the percentage over 1 in the table?? ( again we need a seperate thread for discussing the actual tuning part) |
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| 10-02-2025, 10:54 PM | #96 | |
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Spool*street is more helpful for tuners Last edited by eastsidaz; 10-02-2025 at 11:02 PM.. |
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| 10-02-2025, 11:21 PM | #98 | |
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i actually changed AFR target to 14.9 on low load for a few extra MPG's cause i do a lot of highway/in town driving. oddly enough.. it actually runs smoother on idle and off idle now. ( no no leaking injectors, they are all newer Vitesco Index 12's) i was hoping to get away with the OE bosch multi electrode plugs with Eldor coils, but seems that is going to be an unlikely, so i'll likely get some 1 step colder NGK's this weekend some time. |
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