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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > MHD Log Analysis



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      05-20-2021, 08:01 PM   #1
harnoorbrar
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MHD Log Analysis

Hey, this my first post on here so let me know if I put this in the wrong section, I recently tuned my 2010 335i to stage 1 after getting a BMS charge pipe and I'd like to have my MHD logs read by someone before I go stage 1+. These pulls were using 91 octane in 4 degrees Celsius weather with new coils/spark plugs. I'm also using a stock intercooler so let me know if I'd have to change my intercooler before flashing stage 1+

https://datazap.me/u/harnoorbrar/fir...og=0&data=3-20

https://datazap.me/u/harnoorbrar/sec...og=0&data=3-20

Last edited by harnoorbrar; 05-20-2021 at 08:10 PM..
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      05-20-2021, 11:42 PM   #2
TunafishE93
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I would get a new IC. I forgot how awful the stock intercooler is. You are raising 60 degrees in a 1st to 3rd pull, I raise 10 degrees with a off brand intercooler with same pull.

I didn't dig too much into your log but you have a N54 and posted in the N55 section. You might get a better response in the correct engine section .. https://www.e90post.com/forums/forumdisplay.php?f=58
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      08-12-2024, 01:10 PM   #3
brokeboym3
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Hello, sorry if I am doing this wrong but I wasn’t able to create a thread and this seems like the move relevant to my question. I have a 2012 e92 335is with 101,000km. I have a Brad charge pipe, high flow downpipe, hks blow off valve, and dinan intake filter. I added mhd stage 2 too the car and have been loving it. I attached a data log and wanted to ask if there is anything that seem immediately wrong. I am about to replace my spark plugs, flush my coolant, break fluid, rear dif fluid, and transmission fluid.

I have attached one of my logs below however, it may not be the best and it took me a second to stop

https://datazap.me/u/brokeboym3/335i...og=0&data=3-20
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      08-12-2024, 01:22 PM   #4
whyzee125
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It looks decent! I'd like to see less timing corrections overall and it looks like you're nearing your LPFP's capacity but IMO there's nothing to be alarmed about here at all.
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      08-12-2024, 06:52 PM   #5
TheGoodTheBadTheUgly
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Quote:
Originally Posted by harnoorbrar View Post
Hey, this my first post on here so let me know if I put this in the wrong section, I recently tuned my 2010 335i to stage 1 after getting a BMS charge pipe and I'd like to have my MHD logs read by someone before I go stage 1+. These pulls were using 91 octane in 4 degrees Celsius weather with new coils/spark plugs. I'm also using a stock intercooler so let me know if I'd have to change my intercooler before flashing stage 1+

https://datazap.me/u/harnoorbrar/fir...og=0&data=3-20

https://datazap.me/u/harnoorbrar/sec...og=0&data=3-20
Yeah as mentioned, stock intercooler blows, changing it is a good idea.

Also, your corrections are too bad or critical but I also feel like there are a bit too many for stage 1. The do seem to correlate with the throttle closure events thus nothing alarming.

Are the coils OEM grade?
Are the plugs OEM grade?

Finally, seems like our fuel in Canada is quite bad. Try 91ACN maps, which are the least aggressive. Also, I used to only run Stage 2+ 91ACN on 94 octane from Petro-Canada, it did help with my corrections.

Also I don't ever want to see Fahrenheit in your logs >=/
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TOTALED | 2011 E90 335i xDrive - BMS Cold Air Intake - ETS Charge Pipe - ETS 7" FMIC - MHD Stage 2+ - GFB DV+ - PE Mod - VRSF Catless Downpipe - xDelete - xHP Stage 3
2015 E84 X1 35i M-Sport

Last edited by TheGoodTheBadTheUgly; 08-12-2024 at 06:58 PM..
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