E90Post
 


Extreme Powerhouse
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Not hitting boost target. MHD log help



Reply
 
Thread Tools Search this Thread
      10-19-2024, 02:05 AM   #23
bL79
New Member
2
Rep
16
Posts

Drives: E84 X1 35 /// E36 M3 (RIP)
Join Date: May 2013
Location: CA

iTrader: (0)

Been a busy few weekend and had some tire issues but can turn my attention back to the boost leak. Also hoping I got my leaky compressor fixed to actually run the leak test.

@montegoblu - as I understand it the rule of thumb is a pull from 3k to 6k in 3rd gear and then a little bit into 4th. DSC should be off. This is probably best if you can swing it. The shorter gears arent as ideal.

You need to record more channels in MHD, you only have a handful. From the looks of it seems like you have a boost leak like me. Can you hear any whistling when driving? I can sometimes. Though as this thread shows replacing wg solenoid vacuum system did help me some. ymmv etc
Appreciate 0
      10-19-2024, 11:13 PM   #24
chrxya
Registered
0
Rep
2
Posts

Drives: bmw 335i e92 n55
Join Date: Oct 2024
Location: nc

iTrader: (0)

https://datazap.me/u/chrxya/beta-e30...ta=0-3-4-13-17
can some pls take a look at my logs it the new mhd beta tune
Appreciate 0
      10-26-2024, 03:16 PM   #25
bL79
New Member
2
Rep
16
Posts

Drives: E84 X1 35 /// E36 M3 (RIP)
Join Date: May 2013
Location: CA

iTrader: (0)

Alright gang, love the collaboration but I made this thread to focus on my problems...

Unsurprisingly, you probably have a boost leak. Though your boost target seems odd, probably dont use the beta MHD. Also you didnt really say if anything felt wrong with the car?

Anyway, finally got around to doing another leak test and this time was more successful with the smoke machine. Seems like the Turbo-IC pipe is leaking near the joint to the turbo. Guess Ill be looking at aftermarket options. Not super looking forward to installing it right after just putting the FMIC in but cest la vis.

If you have a boost leak, have visually checked and tightened all clamps then you really need to perform a smoke/pressurized leak check to figure out where you're leaking boost. Also seems likely on cars about this age that there may be several culprits causing issues.

Last edited by bL79; 10-26-2024 at 04:32 PM..
Appreciate 0
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:54 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST