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catbed
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« Reply #60 on: November 25, 2012, 11:24:20 AM »
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My ME7.5 MAFless file sets 2 codewords to 0 to prevent the CEL from showing from MAF sensor voltage too low.
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dgn555
Newbie
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« Reply #61 on: November 25, 2012, 11:40:23 AM »
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My ME7.5 MAFless file sets 2 codewords to 0 to prevent the CEL from showing from MAF sensor voltage too low.
after that esp and abs started to work properly? |
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catbed
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« Reply #62 on: November 26, 2012, 01:06:03 PM »
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after that esp and abs started to work properly?
Can't say for ESP as I don't have it but my ABS works fine. |
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diagnosticator
Jr. Member
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« Reply #63 on: April 23, 2015, 07:33:46 AM »
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And if everybody believed that way we'd still live in caves trying to figure out fire. Shrug.
Unfortunately, almost everyone in several of the qualified tuners clubs feels like that. I heard that most club's members who share information are summarily shot. |
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vwaudiguy
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« Reply #64 on: April 23, 2015, 02:44:05 PM »
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Can anyone comment on blow-through setups, and oil mist in the tract? I would assume no one plumbs crankcase vents back into the intake like OE, but what about stuff getting past the turbo seals? Is this an issue?
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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masterj
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« Reply #65 on: April 24, 2015, 09:45:49 AM »
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Hm... I'll try to make my me7.5 live without maf. Currently investigating diagnostic function of maf to disable it so no errors would be shown. Next step will be to either find cw or hack air flow path. I'll post my progress here since nobody else is willing to do this "for free".
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prj
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« Reply #66 on: April 24, 2015, 09:47:42 AM »
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Hm... I'll try to make my me7.5 live without maf. Currently investigating diagnostic function of maf to disable it so no errors would be shown. Next step will be to either find cw or hack air flow path. I'll post my progress here since nobody else is willing to do this "for free".
This is not correct way to run a ME7 without a MAF. |
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masterj
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« Reply #67 on: April 24, 2015, 09:55:53 AM »
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This is not correct way to run a ME7 without a MAF.
I have hacked my me7.5 to work without post cat o2, even though I literally had to hack it for lsu to work. I really am not here to debate on "correct" way just doing it for my own amusement  alpha-n is ok for me |
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masterj
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« Reply #68 on: April 24, 2015, 10:15:27 AM »
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Just finished with DHFM. Strange, I thought there is something like CDDHFM to skip diagnostics, but found only CDEHFM, which is already zeroed out. I guess it is inactive anyway in my file. So to set DHFM to pass one needs to zero out KFMLDMN map. That will disable min flow error. Do not know yet if we'll get signal error afterwards or not, but I'll check tomorrow. If anyone knows a better way to pass DHFM then please step up UPDATE: I think that last piece of a puzzle is in BGMSZS. I am positive that two hacks applied there will be enough (see attached images) to force me into alpha-n. P.S> I haven't tested it yet but I'll test everything on my car tomorrow. Also it will be interesting to see if ESP and everything else will work... |
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« Last Edit: April 24, 2015, 11:46:42 AM by masterj »
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_nameless
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« Reply #69 on: April 24, 2015, 04:27:21 PM »
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« Last Edit: April 24, 2015, 05:08:00 PM by Marty »
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Giving your mom a tuneup
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masterj
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« Reply #70 on: April 25, 2015, 04:43:10 AM »
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Also this hack needed to switch to calculated airflow path
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masterj
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« Reply #71 on: April 25, 2015, 10:51:15 AM »
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Finished scanning through FR. I see no way to do everything via codewords, but the good news is that I think only 3 hacks are needed + 1 map to edit. So here is my current V2 suggestion for mafless me7.5:
[DHFM] disable maf diagnostics:
KFMLDMN = -910s
LOG:
B_hfm = 1
B_ehfm = 0
E_lm = 0
Z_lm = 1
[BGMSZS] switch calculated airflow:
--[UMSCHALT] switch from rlflmroh_w (MAF) to rlfdkroh_w (calculated) by using hack1 (B_hfm forced 0)
--[BFKMSDK] disable fkmsdk_w (diff factor between maf and calculated values) by using hack2 (B_ehfm forced 1)
--[FGABGL] use static msndko_w (leak in tp) by using hack3 (B_ehfm forced 1)
LOG:
fkmsdk_w = 1
msndko_w = 0
dfuelsan_w = 0
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« Last Edit: April 26, 2015, 07:41:23 AM by masterj »
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prj
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« Reply #72 on: April 25, 2015, 11:43:53 AM »
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Talk about going at it completely the wrong way.
Even if you want to run it with the pre-throttle sensor, everything you posted here isn't needed.
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masterj
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« Reply #73 on: April 25, 2015, 12:02:42 PM »
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Talk about going at it completely the wrong way.
Even if you want to run it with the pre-throttle sensor, everything you posted here isn't needed.
So how would YOU do it? Isn't it exact same path that ecu takes when maf is disconnected? |
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« Last Edit: April 25, 2015, 12:05:15 PM by masterj »
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masterj
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« Reply #74 on: April 26, 2015, 07:47:01 AM »
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Just dropped here to say that test of my mafless version was successful. No hickups, no limp mode, no anything. Every single cycle bit is also set. Logs attached. Also I think this is way "cleaner" than hiding errors by disabling error classes |
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