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BMW 3-Series (E90 E92) Forum
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MHD "take a look at my log" thread
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06-21-2020, 08:15 PM | #3939 |
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Hello, if anyone could help that would be really helpful. I dont feel like the car is running right. It feels a lot slower than it should be. Im running the mhd stage 2+ e50 v9 map. Im trying to understand what everything means but I cant really figure out what is wrong.
https://datazap.me/u/theslonly335/lo...g=0&data=20-24 Thank you, Mods: Relocated inlets primary and secondary cat delete one step colder sparkplugs gapped at 0.022" 7 inch vrsf intercooler walbro 450 lpfp charge piep and bov mhd stage 2+ e50 v9 e50 in the tank |
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06-21-2020, 10:29 PM | #3940 | |
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When did you change plugs and coils? Also more importantly check your intercooler connection points, I can't see any reason a 7 inch VRSF intercooler would perform so bad. |
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06-22-2020, 12:13 AM | #3941 | |
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06-22-2020, 03:23 PM | #3942 | |
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I mean IC couplers/piping, have them checked. How old is the VRSF intercooler? I would recommend you replace all coils with Eldor ones. Your WGDC are hitting 80% that's too high, plus you should be hitting 18-19 psi on boost, your Datalog shows 14-15. Run stage 1+ and see how it goes until your IAT/timing corrections issues and WGDC are resolved. |
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06-22-2020, 07:20 PM | #3943 | |
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You may have a boost leak on the hot side which can cause high WGDC's. I would check there first and replace them all if you have done so already. Boost leaks will cause you to need more WGDC to reach your target.
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06-22-2020, 09:29 PM | #3944 |
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https://datazap.me/u/fmarsjr/3rd-gea...=0&data=3-4-13
2011 BMW 335i N55 Manual RWD Miles: 161K Mods: VRSF Downpipe, Chargepipe, Inlet, and Outlet ETS Intercooler BMS Intake I think I am running pretty damn good but I am still not hitting my target PSI. Think I could have a boost leak? A friend of mine said try getting a new boost solenoid. EDIT: Also, my IAT's look a little high for a 7" ETS intercooler, right? Any input would be helpful! |
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06-22-2020, 11:19 PM | #3945 | |
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IAT's look fine Boost is well under target, WGDC is almost max Check boost solenoids or vacuum lines Alot of timing corrections throughout the pull, map is either too aggressive or fuel octane inst good enough
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06-22-2020, 11:31 PM | #3946 | ||
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Could that mean that my turbo is just old, high mileage and my wastegate is failing? What vacuum lines specifically? |
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06-22-2020, 11:50 PM | #3947 | |
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If you haven't ever replaced the vacuum lines i would just do all of them.
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06-23-2020, 05:21 AM | #3948 | |
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Possibly boost leak, turbos are struggling to hit boost targets, wgdc also high and several timing corrections. Have you replaced all vacumn lines, checked all intercooler and charge pipe connections, including vacuum cannister connection points ? I would recommend running stage 1+ until your boost leak and timing correction issues are sorted out. Solenoids next to be checked and replaced if needed. |
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06-23-2020, 05:22 AM | #3949 |
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06-23-2020, 09:25 AM | #3950 | ||
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All intercooler connections seem solid. The only think I can think of is the VRSF Inlet and Outlet. They are made out of metal and took some playing to get into the turbo. Hard to see down there so I'm not sure if one is slightly crooked or not. |
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06-24-2020, 09:00 PM | #3951 |
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2011 335i xdrive
auto- XDelete and XHP stage 3 88k miles MHD stage 2+ E30 FBO Stage 2 fuel it pump New spark plugs ngk 97506 gapped .022” Hi all, Just wondering if some of you can take a look at some pulls I did (no warnings or limp mode) to make sure everything looks ok or if there are things I need to look out for. Also would like to know if I’m getting enough fuel with the e30 and possibly run more e85 in the future. Any help is greatly appreciated. Thanks https://datazap.me/u/mengkmoua |
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06-24-2020, 11:45 PM | #3952 | |
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You are overboosting and underboosting WGDC is maxed out Lambda AFR never goes to fuel cut off after you let off the throttle You are logging alot of things that you dont need and leaving a few critical ones out
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06-25-2020, 07:38 AM | #3953 | |
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06-25-2020, 11:29 AM | #3954 | |
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06-25-2020, 02:54 PM | #3955 | |
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amb pressure (relevant only in case you don't live at sea level) accel ped. pos. % boost boost mean boost target cyl timing cor for all six cylinders fuel low pressure sensor gear iat lambda bank 1 afr lambda bank 2 afr load actual load req. ltft 1 % ltft 2 % rail pressure rpm stft 1 % stft 2 % throttle position timing cyl. 1 crk wgdc after pid % wgdc % wgdc base value % Here's a good manual for interpreting MHD logs. It's not perfect but it gets you going: https://www.docdroid.net/IyQ24N5/int...d-datalogs-pdf Last edited by palze; 06-25-2020 at 03:01 PM.. |
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06-25-2020, 07:59 PM | #3956 | |
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06-28-2020, 10:36 PM | #3957 |
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MHD stage 2 tune, DPs, 5"FMIC, 93 octane
I can see that the LFPF is dipping a bit low, so should upgrade before running e85. HPFP still seems good though. Otherwise it's the timing that looks strange. Should I mix in a gallon of e85 to confirm that I just don't have enough octane? What's the formula between knock events and timing retard? 3* per? https://datazap.me/u/loudnslow/stage...6-8-9-10-11-20 |
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06-29-2020, 04:16 PM | #3958 | |
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Your afrs are rich, yet many corrections pointing towards poor octane and/ or don't know what the deal w spark plugs. You could mix ethanol to improve octane but as you mention lpfp is dipping low, may get worse w e85.
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06-29-2020, 09:42 PM | #3959 | |
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The trims seems to be well within range so I assumed high 11 is the target of this tune. Or could there be another reason? |
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06-30-2020, 12:31 PM | #3960 |
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Just want to know if this looks healthy, changed my cam ledges recently
https://datazap.me/u/sherazkn/20psi-...&data=1-3-4-18 Current Mods: Stage 2 LPFP Index 12's FBO Inlets JB4 w/ MHD BEF 2 Step Thanks |
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