MMP1k logs -- Boost leak?

morffius

Specialist
Jul 15, 2017
87
16
0
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135i
I finally got the MMP1ks installed and have been trying to get some logs. It felt like slow spooling and I did get a 30ff code. Since then I replaced the Boost solenoids and took a look at the outlets, inlets, charge pine and all clamps are tight and Oring is in the charge pipe. The solenoids definitely improved the spool, but the logs look very slow. Anyone think they can help?

AFTER solenoids:
https://datazap.me/u/morffius/post-boost-solenoid-replacement?log=0&data=23

BEFORE solenoids:
https://datazap.me/u/morffius/log-1531883183?log=0&data=23
 

morffius

Specialist
Jul 15, 2017
87
16
0
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135i
I haven’t checked that, but I will tomorrow. I didn’t make any changes to the blow off valve though. I’m using the same charge pipe and intercooler connection I had before
 

langsbr

Captain
Apr 5, 2017
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07 335i 6MT e90
No, the inlets aren't pressurized. Having a leak in them just makes it a bitch to try and pressure test the whole system.

I would focus on the outlets to the throttlebody.
 

langsbr

Captain
Apr 5, 2017
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07 335i 6MT e90
Are you still using your vacuum canisters? Have you replaced your vacuum lines with silicone? I'd definitely check all the vacuum hoses.

Looking at your after log, I'd say you have to have a boost leak. Even with 70% wgdc you're only hitting 12 psi at 4500 rpms.
 

Rcboosted2007

Lieutenant
Jan 28, 2018
902
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0
Parts unknown
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07 335i
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4977F8DB-7DB9-4437-AB91-7352B24F5832.png
 

morffius

Specialist
Jul 15, 2017
87
16
0
Ride
135i
I am still using vacuum containers. I also had already replaced all the vacuum line with the expensive silicone stuff on my original turbos without any leak. It’s hard to imagine there is a boost leak in the big piping because it is all so secure. Despite that I will get a smoke machine.

Now I am more concerned it is improperly adjusted turbo waste gates. I had a problem where one of the turbos, the wastegate flapper did not fully close the hole when I bought them and I had to send them back to get fixed. I will get a vacuum gauge and test the wastegates.
 
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Blaster3500

Sergeant
Nov 5, 2016
286
227
0
SC
I never understood why the BMW crowd plays these guessing games when it comes to finding a boost leak. The DSM/Evo community has been pressurizing the intake system for 3 decades and you SEE the boost leak. No guesswork involved. Pressurize the intake and find your boost leak.

I imagine because the engine bay is extremely tight. Especially with passenger side inlets.
 
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Rcboosted2007

Lieutenant
Jan 28, 2018
902
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Parts unknown
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07 335i
Mmp stage 3. Target boost 31psi it would sometimes hit target momentarily with wgdc maxed out, and fade down. Also i had high iat. The tuner noticed the high wgdc. I completely overlooked it. Turbos usually make boost past 3800 rpm
 

langsbr

Captain
Apr 5, 2017
1,189
678
0
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07 335i 6MT e90
I never understood why the BMW crowd plays these guessing games when it comes to finding a boost leak. The DSM/Evo community has been pressurizing the intake system for 3 decades and you SEE the boost leak. No guesswork involved. Pressurize the intake and find your boost leak.

I capped one of my inlets and put a gauge and valve on the other to find my boost leak. Luckily I found it at around 5psi because I doubt I have the inlets tight enough to hold 20+ psi since they don't see boost .
 

Rcboosted2007

Lieutenant
Jan 28, 2018
902
89
0
Parts unknown
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07 335i
For fog machine i just pushed it against the filter opening and it smoked out of the leak within a few seconds. $30 on amazon. Ive since installed psp outlets. (Evo community is a lot slower .so they have more time for testing procedures lmao!)
 
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morffius

Specialist
Jul 15, 2017
87
16
0
Ride
135i
I ordered a fog machine just now. Do you have a good log of your car so I can compare and see what to work towards?
For fog machine i just pushed it against the filter opening and it smoked out of the leak within a few seconds. $30 on amazon. Ive since installed psp outlets. (Evo community is a lot slower .so they have more time for testing procedures lmao!)