08-31-2019, 05:49 PM | #1 |
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B58 Log Review Thread
Introductory guide to logging your BMW:
Recommended Logging Method: 1. Shift to the appropriate gear (8AT Users: Use 4th, 5th, or 6th Gear; 6MT Users: Use 3rd or 4th Gear) 2. Start at 2000-2500rpm 3. Floor it (8AT Users: Don't press the kickdown under the pedal) 4. Stop at 6500-7000rpm Recommended Logging Parameters: Accelerator Pedal Position Throttle Angle Engine Speed Boost Pressure (Target) Boost Pressure (Actual) WGDC Intake Air Temperature AFR/Lambda (Target) AFR/Lambda (Actual) Ignition Timing (Target) Ignition Timing #1 (Actual) Ignition Timing #2 (Actual) Ignition Timing #3 (Actual) Ignition Timing #4 (Actual) Ignition Timing #5 (Actual) Ignition Timing #6 (Actual) Ignition Timing #1 (Correction) Ignition Timing #2 (Correction) Ignition Timing #3 (Correction) Ignition Timing #4 (Correction) Ignition Timing #5 (Correction) Ignition Timing #6 (Correction) HPFP Pressure (Target) HPFP Pressure (Actual) LPFP Pressure (Target) LPFP Pressure (Actual) LTFT STFT Knock Detected Additional recommendations for BM3 Users, courtesy of alyabiev https://f30.bimmerpost.com/forums/sh...postcount=1293 Code:
Accel. Pedal[%] Actual brake pressure[hPa] Ambient pressure[hPa] Ambient temperature[В°C] Boost (Pre-Throttle)[hPa] Boost Pressure (Deviation)[hPa] Boost pressure (Target)[hPa] Coolant Temp[В°C] Exhaust gas temperature after catalyst from model[В°C] Gear HPFP (Target)[MPa] HPFP Act.[MPa] IAT[В°C] Intake air temperature before throttle measured[В°C] Knock Detected[0-n] Lambda[AFR] Lambda Act.[AFR] Load Act. (Rel.)[%] LPFP Act. (Raw)[kPa] LTFT MAF HFM[kg/h] MAP[hPa] Oil pressure actual value (absolute pressure)[hPa] Oil temperature after filter[В°C] Oil temperature in the sump[В°C] Raw cylinder head temperature[C] Set temperature coolant STFT Temperature Raw value of the intake air temperature sensor 3[C] Throttle Angle[%] Transmission temperature[В°C] Boost (Target Act) Boost Setpoint Distribution Factor (Turbine/Wastegate) Engine Speed[1/min] Ignition Correction (Total)[пїЅ] Ignition Mode (Spool) Ignition Target[пїЅ] Ignition Timing Corr. Cylinder 1[пїЅ] Ignition Timing Corr. Cylinder 2[пїЅ] Ignition Timing Corr. Cylinder 3[пїЅ] Ignition Timing Corr. Cylinder 4[пїЅ] Ignition Timing Corr. Cylinder 5[пїЅ] Ignition Timing Corr. Cylinder 6[пїЅ] Ignition Timing Cylinder 1[пїЅ] Ignition Timing Cylinder 2[пїЅ] Ignition Timing Cylinder 3[пїЅ] Ignition Timing Cylinder 4[пїЅ] Ignition Timing Cylinder 5[пїЅ] Ignition Timing Cylinder 6[пїЅ] Load (Actual)[%] Load (Limit)[%] Load (Target)[%] Relative Fuel Mass[%] Target Mass Flow (Exhaust Manifold)[kg/h] Target mass flow corrected for boost pressure control[kg/h] Torque (Actual)[Nm] Torque (Target)[Nm] Torque for load (Target)[Nm] Turbine (Actual)[kW] Turbine Adder[kW] Turbine Base[kW] Vehicle Speed[km/h] WGDC (Actual)[%] WGDC (Adder)[%] WGDC (Base)[%] WGDC (D-Gain)[%] WGDC (I-Gain)[%] WGDC (P-Gain) [%] Boost more than +/- 2PSI from target More than 3° timing pull AFRs increasing from target HPFP Pressure decreasing from target FAQ Do I need to upgrade my charge pipe before tuning? It is not needed for most setups. Stock charge pipes have been tested to over 600whp. Big turbo kits come with their own aluminum charge pipes for peace of mind. Otherwise, you can do it for looks and/or ease of adding a meth injection system. Do I need to upgrade my intercooler before tuning? Our cars have an air-to-water intercooler that is integrated in the manifold. This, again, has been tested to over 600whp. Radiator upgrades are available but only really needed for track duty. Daily driving, 1/4 mile, highway pulls, etc. tend to not need it. Your best indicator will be logging IATs while racing to see if the system is getting heat soaked. When is an upgraded fuel pump needed? HPFP hits it's limit around 450whp. This can be reached easily with a downpipe and ethanol blend. If your logs show fuel pressure dropping at peak boost, then it's time to upgrade the fuel pump. More details on fuel pump options here: Official B58 HPFP Options Thread UPDATE: Tuners have released OTS maps that take advantage of HPFP upgrades. If you want to run a "Stage 2+" map, you need an upgraded HPFP. When is an upgraded clutch needed? The 6MT clutch is good for ~450 ft-lbs. This can be reached easily with a downpipe and ethanol blend. If you experience clutch slip, you can upgrade to the OEM clutch from an E90 335is/F10 550i for a cheap and easy to drive upgrade that will hold 500-600 ft lbs. For higher power applications, look into aftermarket options.
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Last edited by kern417; 01-22-2021 at 12:58 PM.. |
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08-31-2019, 05:50 PM | #2 |
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91/95ron
93/98ron 95/102ron E30 = 30% Ethanol/70% gas Tune Baseline Info - Data provided at 6500rpm at WOT OEM Stock Boost: 10.5 PSI AFR: 14.0 Timing: 17.5° Advance MPPSK Boost: 14 PSI AFR: 12.74 Timing: 8.5° Advance Bootmod3 Stage 1 91oct/95ron v2.0 Boost: 17.2 PSI AFR: 12.3 Timing: 10.0° Advance Stage 1 93oct/98ron v2.0 Boost: 16.5 PSI AFR: 12.7 Timing: 12° Advance Stage 1 E30 v2.0 Boost: 16.5 PSI AFR: 12.7 Timing: 15° Advance Stage 2 91oct/95ron v2.1 Boost: 19PSI taper to 14PSI AFR: 12.6 Timing: 11.5° Advance Stage 2 93oct/98ron v2.0 Boost: 16.5 PSI AFR: 12.6 Timing: 12.5° Advance Stage 2 E30 v2.0 Boost: 20.1PSI Taper to 16.6PSI AFR: 12.72 Timing: 16.0° Advance Stage 2 E30 AGG v2.0 Boost: 16.5 PSI AFR: 12.84 Timing: 16.5° Advance Stage 2+ 93oct/98ron v2.1 Boost: 21PSI Taper to 17PSI AFR: 12.2 Timing: 15.0° Advance Stage 2+ E30 v2.1 TBD MHD Stage 1 91oct/95ron Boost: 16.5 PSI AFR: 12.5 Timing: 12.5° Advance Stage 1 93oct/98ron TBD Stage 1 95oct/102ron v3.0 TBD Stage 1 E30 TBD Stage 2 91oct/95ron v3.0 Boost: 18.1PSI AFR: 12.5 Timing: 10.5° Advance Stage 2 93oct/98ron Boost: 17PSI AFR: 12.5 Timing: 13.5° Advance Stage 2 95oct/102ron v3.0 Boost: 18.8PSI AFR: 12.5 Timing: 16.5° Advance Stage 2 E30 v3.0 Boost: 17.8PSI AFR: 12.8 Timing: 16.5° Advance Stage 2+ 93oct/98ron v3.1 TBD Stage 2+ E30 v3.1 Boost: 19.0PSI AFR: 12.8 Timing: 18.0° Advance
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Last edited by kern417; 05-12-2020 at 07:46 AM.. |
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09-01-2019, 01:35 AM | #4 |
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I am running bootmod3 stage 1 and i like it so far. I switched to the OTS e30 map and realized I was starting from scratch again, so that + my general curiosity kicked off the idea for this thread. I have to run some logs to see what the differences are from the 93 map I was running originally. But it would ve nice to know what to expect without running logs on the street.
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09-01-2019, 11:55 PM | #6 | |
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yup pretty much. so go to m4 2500 rpm press gas pedal all the way down just before it clicks so it dosent downshift into second on its own. unless you have xhp then you can disable kickdown |
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09-02-2019, 04:53 AM | #8 |
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Yep, I'm specifically referring to the "click." If you floor it, you can feel a second click underneath the pedal depending on how far you push down. That's the kickdown switch, and is the difference between accelerating in gear vs. the car down shifting for fastest acceleration. If you hit the kickdown switch, the car may downshift to 3rd/2nd. You want it to stay in the same gear for the whole pull.
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09-02-2019, 08:28 AM | #9 |
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The only experience I have with logging (previous instructions by Terry Burger) is using M4 which indeed will not trigger the kickdown.
I hang on every word at face value, so I just wanted to make sure I wasn't missing anything. |
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09-02-2019, 10:14 AM | #10 |
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09-02-2019, 10:58 AM | #11 | |
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Do you think it would be more helpful to post that kind of info? Without a screenshot of a full map editor, it would be hard to illustrate, so I just posted peak values. |
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09-02-2019, 11:58 AM | #12 | |
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Yes definitely let's stick to a certain RPM close to redline like 6500 ?
Quote:
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09-02-2019, 01:03 PM | #13 |
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Here's mine at 6500 RPM
Car: 340i MPPSK, no other mods. Fuel used: less than 91 Octane Ambient Temp: 100F Manifold Temp: 110F Boost: 14 PSI AFR: 12.74 Timing: 8.5 degrees Knock Delta: -0.1 Low Octane effecting timing badly. |
09-02-2019, 02:12 PM | #14 |
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Awesome, I'll add that. Please post logs as well if you have any
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09-02-2019, 03:17 PM | #16 |
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Why would it? I want to focus on peak values but can add more detail across the rev range if it makes sense. But I don't have any differences between logging in 3rd gear and 4th gear other than the amount of time/data points across the log.
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09-02-2019, 03:19 PM | #17 |
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09-02-2019, 03:25 PM | #18 |
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I guess engine load is different in each gear ? MHD recommend 4th gear with DSC off.
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09-02-2019, 03:54 PM | #19 |
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Load is different and therefore so will boost or timing.
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09-03-2019, 04:48 AM | #21 |
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mine at 6500 RPM :
Car: 340xi, software tune by me only. Fuel used: 98RON. Ambient Temp: 20 degrees of Celcius IAT : 32 degrees of Celcius Boost: 17.7 PSI AFR: 12.6 Timing: 7.8 degrees I would recommend to upload data from 6000-6300rpm range as most B58's make max power there. |
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09-03-2019, 05:13 AM | #22 | |
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Not doubting your comments but most b58s dynos I saw power peaking around 6500 RPM
https://www.google.com/search?q=b58+...ih=945#imgrc=_ Also your timing advance is quite low I guess with a bit less boost or higher octane you will get better timing and more power. That's what happened to me when I increased the boost timing retarded which resulted to lower top end power. I learned that more boost not always equal more power, Ignition timing is the key, If we don't get a good combustion then the extra boost is useless. Also how do you make your own tune ? I wish I could do that. Quote:
Last edited by IMS-340C; 09-03-2019 at 05:23 AM.. |
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