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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 > N54 Public XDF Repository



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      08-07-2020, 03:26 AM   #89
CarAbuser
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Quote:
Originally Posted by 6ixSpd View Post
Anyone? Looking to do the same on a 2010 N54 as well. I don't want to tune the car for power or any Stage 2, just disable the CEL for the catless DPs.
It's pretty clear in the XDF files.

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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Quote:
Originally Posted by CarAbuser View Post
It's pretty clear in the XDF files.

Reduce all the cells in the cold start duration table to 0 then disable the two diagnostic codes for cat monitoring (29F4 29F5)
Issue was the IJE0S XDF in the OP's link does not contain the Toggles for those two DTCs. I found another XDF on the "other" side that is much more comprehensive
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      09-13-2021, 06:14 AM   #91
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Quote:
Originally Posted by 6ixSpd View Post
Issue was the IJE0S XDF in the OP's link does not contain the Toggles for those two DTCs. I found another XDF on the "other" side that is much more comprehensive
can you share this xdf?

i found the RFP xdf, have somethings news
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      11-22-2022, 01:14 PM   #92
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Hello. Can anyone tell what tables to modify to delete the "soft rev limiter"
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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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Quote:
Originally Posted by Podunk View Post
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)
Figure it out? WG base table by logging Boost setpoint and MAF Req (wgdc)

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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Quote:
Originally Posted by eastsidaz View Post
Figure it out? WG base table by logging Boost setpoint and MAF Req (wgdc)

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.
yeah i figured it out after coming across a YT video explaining it, but trying to find it via google search was fruitless LOL and the Excel sheet doesn't really point it out either.

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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Quote:
Originally Posted by Podunk View Post
yeah i figured it out after coming across a YT video explaining it, but trying to find it via google search was fruitless LOL and the Excel sheet doesn't really point it out either.

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)
Pretty much. I usually take LTFT into account too only for cruise though, as you know it isnt active at WOT.

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, 11:05 PM   #97
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example of my scalar will give you an idea of kinder how it should look. This is for 93oct/98ron
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      10-02-2025, 11:21 PM   #98
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Quote:
Originally Posted by eastsidaz View Post
example of my scalar will give you an idea of kinder how it should look. This is for 93oct/98ron
thanks for the replies and examples, appreciate it it alot and yeah LTFT are also always a consideration LOL

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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      10-03-2025, 12:11 AM   #99
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OE bosch plugs are good im running them with delphi coils without issue. Anything better more stock turbos id go colder NGK's
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      10-03-2025, 03:19 AM   #100
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Quote:
Originally Posted by eastsidaz View Post
OE bosch plugs are good im running them with delphi coils without issue. Anything better more stock turbos id go colder NGK's
Oh yeah, not stocker twins, Pure 600's
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