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MHD "take a look at my log" thread
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07-05-2021, 02:39 AM | #4907 | |
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It's when it drops to 1500psi or less that you need to be concerned. Looks like you may have some sort of a small boost leak though, |
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07-05-2021, 11:45 AM | #4908 | |
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2019 F150 S Crew 4x4 3.5 Twin Turbo - newest $$$ pit
2010 E90 SG 335i Sport, Premium, Nav. MHD, VRSF CP, 5" HD FMIC, DCI's, 1 step colder NGK's, Apex EC-7's and Michelin PS4S, Cree 6000k H8 LED Angel eyes SOLD 2011 Toyota Tacoma DC TRDOR 4x4 lifted and armored SOLD 2014 Acura MDX SHAWD wifes |
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07-05-2021, 12:22 PM | #4909 | |
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Drives: 09 E92 335i 6MT
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09 E92 335i 6MT / Alpine White / Coral Red / VRSF 7.5" / VRSF DCI / VRSF Catless Downpipes / VTT Charge Pipe / Turbosmart RacePort Gen V / RB OEM Billet Turbos / CD919 Custom Tune / Bilstein PSS9s
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07-06-2021, 09:06 AM | #4910 |
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Hey guys, long time lurker of the forums, new to posting. Before I even mention anything I just wanna say I appreciate any of you who will take the time to help, means the world to me.
Recently, like a day or two ago, my car went from sometimes overboosting over target on MHD 2+ to boosting 1-2 pounds under target. Not sure why it happened, I could physically feel the car feel a little bit more held back. My initial worry was compression and/or turbos, so I bought a compression tester which I will use today to figure out if my engine is healthy. The turbos were a concern because during the transition from a stop to low speeds I see a small puff of smoke out of the left pipe whenever I’m watching someone else drive away in my car. I decided to log my car before testing or changing anything and did 2 pulls in 3rd gear from around 2-2.5K RPM to redline. Here is the link : https://datazap.me/u/farazt123/tryna...og=0&data=3-16 Right about where boost first loads in, right after I stamp the throttle, the car will start pulsing, or hesitating, like it’s missing, but I don’t get any codes other than 2C7B which I believe is my downpipe O2 sensor going out, but it never threw a light so I figured it’s unrelated. At the same time it starts pulsing, rail pressure drops, all my cylinders get timing corrections, low pressure fuel pump starts acting weird, fuel trims go down. By the end of the WOT pull it seems like my LPFP touches 50PSI. I was desperately hoping this was my cause since it would mean a lot cheaper than an engine or turbos. If any of you are willing to go back to a log on my account that is called HPFP testing, you’ll see I did another pull, not sure if I did it properly but it seems like my LPFP doesn’t go anywhere near as low. Thanks again! Sorry for the huge post. TLDR; https://datazap.me/u/farazt123/tryna...og=0&data=3-16 Weird hesitation right after I open up throttle, cars boosting 1-2 psi under target after a few months of boosting over target sometimes. Haven’t done compression test yet, will today, but logs make me think potentially a LPFP. Edit : did a compression test and here are my numbers. Cyl #6 160 psi Cyl #5 165 psi Cyl #4 165 psi Cyl #3 165 psi Cyl #2 165 psi Cyl #1 170 psi Last edited by razthecat; 07-06-2021 at 07:48 PM.. Reason: Add info |
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07-06-2021, 09:42 PM | #4911 | |
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It could be your boost solenoids playing up causing the boost fluctuations, also looks like you have a boost leak, as your WGDC is climbing to 80%+ and only reaching around 13psi. Have you changed your vacuum lines recently? If not, a good idea to change them, Check charge pipe, DV connections, vacumn canister connection points for any cracks, FMIC connections. You could also do a smoke test to help point out any possible leaks. |
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07-06-2021, 10:19 PM | #4912 |
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07-07-2021, 02:53 AM | #4913 |
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Hey, im runing 335is st2+ with mhd map. Can You please take a look on log ? I can see some timing corrections, but is that something I should worry about ?
https://datazap.me/u/nerfy/st2-102-o...?log=0&data=20 You can see overboost at begining, because I have custom turbo inlets, when map is created for stocks. |
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07-07-2021, 04:01 AM | #4914 | |
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07-07-2021, 04:52 AM | #4915 |
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Well its not yet, I just asked Ken for some adjustments in map, because I had problem with one faliture, so lets say for now is a "custom" and he just asked me for feedback. Fuel was RON 100 on map for 102 so maybe thats why there are knocks.
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07-07-2021, 09:26 AM | #4916 |
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^ beta tester? Things to come? Yea I would run the 93oct map if I were you.
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2019 F150 S Crew 4x4 3.5 Twin Turbo - newest $$$ pit
2010 E90 SG 335i Sport, Premium, Nav. MHD, VRSF CP, 5" HD FMIC, DCI's, 1 step colder NGK's, Apex EC-7's and Michelin PS4S, Cree 6000k H8 LED Angel eyes SOLD 2011 Toyota Tacoma DC TRDOR 4x4 lifted and armored SOLD 2014 Acura MDX SHAWD wifes |
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07-07-2021, 11:30 PM | #4917 | |
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07-08-2021, 12:18 AM | #4918 | |
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I hope you already have a Metal charge pipe, stock ones will eventually crack/blow especially when you are tuned. Wastegates could also be playing up, if they aren't staying shut properly etc, but do one thing at a time to rule them out. |
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07-08-2021, 08:26 PM | #4919 |
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hELLO
Can anyone help me with my log & help translate what everything means , if there is inconsitincy somweherre can you point it out, Car is 2009 Sedan 335i Upgraded chargge pipe, & DCI , i also added an oil catch can & walnut blast, with upgraded pvc valve. https://datazap.me/u/carlos-lopez/lo...7-8-9-10-11-14 |
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07-09-2021, 12:52 AM | #4920 | |
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Your log is missing a lot of logging important parameters. I guess you can reset the logging values to default in the MHD app. So you will have to make a new log as well
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07-09-2021, 08:00 AM | #4921 | |
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Car has been at a German Performance shop getting down pipes installed. I shared the logs with them. They state there is no fuel issue, that there is a boost leak in some of the wastegate hoses, they will replace them while doing the downpipes. Overall the car checks out very well.
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VRSF Performance Intake Kit / XS Power Charge Pipe V2 / ARM 5" Intercooler FMIC / MHD Stage 2 V10 / FTP N54 PCV Valve / VRSF 3" Catless Downpipes / xHP Stage 1
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07-09-2021, 01:36 PM | #4922 | ||
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07-09-2021, 05:29 PM | #4923 | |||
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Here you go , I really appreciate it any feedback little history on this car , I bought it at a fair price from a mature lady that kept it stock, always kept the maintenance on it , I have had it since April it's amazing ! I've never been push back on a car from the acceleration!! I've so far have replaced the cover gasket , upgraded the pvc valve when I did a walnut blast , also added an oil catch can, DCI chargepipe is replaced to an aluminum one but ima going to replace it with one without the DV Valves and add a Tial bov, , the transmission was rebuilt and flashed with stage 2 XHP , rear fuel sending unit was leaking and car smelled like gas that's been changed , I have index7 injectors and just bought 6 index 12"s going to be installed this week , could where changed spark plugs changed it's flashed on stage 1 Mhd tune on 93 octane,replaced some vacuum lines , one thing I noticed is that after the tune I hear the woooosh sound as if I have a bov valve but I don't ! Thanks im hoping to keep the car as I love it ! Sure is an amazing car to drive !! I will post my progress here as there is a lot I'm gonna do to this car. https://datazap.me/u/carlos-lopez/lo...&data=3-20 |
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07-09-2021, 06:55 PM | #4924 | |
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- your low pressure fuel sensor seems to be pinned at 55.7, that might indicate you need to replace this sensor - your iat is too high at the end of your pull, you may need to invest in a upgraded intercooler - your lambda afr 1 & 2 are a bit slow to reach 234 again, but if you gonna change your injector this week, that's perfect, you will see if it's slightly leaking injectors or lazy o2 sensor with a new log
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07-09-2021, 06:57 PM | #4925 | ||
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07-09-2021, 06:59 PM | #4926 |
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You too
And the bov sound should come from the DCI, you can hear DV releasing pressure through the big filters and the increased boost of the V9 maps
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07-10-2021, 06:53 AM | #4927 |
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Drives: 07 E92 335i 6MT
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Hi all,
E-mailed MHD for them to take a look at my logs… was on 93oct stage2+ tune, MHD replied and said fuel looked really good & for me to try the 95oct map, so I did. MHD said logs looked good for 95oct map while running 94oct fuel. I’m a bit concerned about this and wanted a second opinion… my concern is with cylinder 5 timing corrections as compared to the other cylinders. I’ve flashed back to stage 1/91oct as I recently installed a new clutch and was breaking it in. Now that it’s fully broken in I will be flashing back to stage2+ .. 95oct log below https://datazap.me/u/phoenix335i/log...og=0&data=3-22 93oct log below https://datazap.me/u/phoenix335i/log...og=0&data=3-22 |
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07-10-2021, 08:24 AM | #4928 | |
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