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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > 335i limp mode party at the track



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      05-01-2016, 10:35 PM   #991
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mrvedit, thanks for your response.

I do have the Carly app on my iPhone, that's what you are referring to right? So I'll use that to scan for codes rather than another generic OBD app? Just wanting to be clear that is what you are referring to.

My DashCommand app shows coolant at 225F or 105C, so that's normal right?

So it really is oil them and coolant temp as you refer to, cool the engine bay.

Lastly, what does BMS's oil thermostat mod do, does that actually help keep your oil temp down? how?
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      05-02-2016, 09:26 PM   #992
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Yes, the Carly app will show more detailed info than a generic ODB scanner/app.

I have all the parts to install oil pressure and coolant temperature via gauges in place of the ashtray, but have not yet installed them.
Therefore I don't know what normal coolant temp is, or what value put the engine into limp mode.

I ordered the Burger Tuning oil thermostat mod, but also never installed it because my replacement engine is running much cooler than the hot-running one which finally threw a rod. The mod works by running the oil through the cooler at all times. Therefore when you start the track session the oil might be 80F cooler than when you star; and start cooling right away instead of waiting until 210F or so is reached.
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      05-04-2016, 10:30 PM   #993
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Got it. Thanks again. So I did scan with the iCarly app after the car threw the engine light again. I'm getting Engine module code:
Fault: Charge pressure control, plausibility: Pressure too low
- Code: 002C57

Does anybody think this is boost related? Could be charge pipe connection going? I inspected charge pipe but can't tell if the connection is leaking.
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      05-05-2016, 10:57 AM   #994
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Quote:
Originally Posted by DieselDrink View Post
Got it. Thanks again. So I did scan with the iCarly app after the car threw the engine light again. I'm getting Engine module code:
Fault: Charge pressure control, plausibility: Pressure too low
- Code: 002C57

Does anybody think this is boost related? Could be charge pipe connection going? I inspected charge pipe but can't tell if the connection is leaking.
I assume is n55, if yes, look into the electropneumatic pressure converter in wastegate valve. If defective will be getting stock open and cause the above fault code.
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      05-07-2016, 04:08 PM   #995
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Quote:
Originally Posted by feuer View Post
I assume is n55, if yes, look into the electropneumatic pressure converter in wastegate valve. If defective will be getting stock open and cause the above fault code.
Thx Feuer! Will do.
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      05-14-2016, 02:04 PM   #996
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Fixed

Quote:
Originally Posted by DieselDrink View Post
Thx Feuer! Will do.
So update: On my N55, which still has full extended warranty, BMW replaced the pressure converter as mentioned by Feuer, off the waste gate valve. They tested turbo and its responds to test, fully moving waste gate.

I suspect these parts as an old mechanic once said it, they get "lazy" after a while. They may still work, and not throwing code all the time, but not fully functioning all the time. BMW said they didn't really know if it was that part or not, but seen it before, so they threw a new one on.

Response is really good now. Ready for Track day in June, 1st time. Hope it goes well.

Looking to do Dinan Stage 2 tune next, but likely wait until my warranty comes fully due.
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      12-01-2016, 12:38 AM   #997
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to those of you looking to invest into an oil cooler, trying removing your plastic engine cover.
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      12-01-2016, 01:42 PM   #998
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Quote:
Originally Posted by 6IX-F10-N52 View Post
to those of you looking to invest into an oil cooler, trying removing your plastic engine cover.
What is that going to do?
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      12-01-2016, 03:34 PM   #999
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Quote:
Originally Posted by feuer View Post
What is that going to do?
lowers oil temps by 10c/50f.
the plastic cover is a heat trap.
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      12-01-2016, 03:41 PM   #1000
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Quote:
Originally Posted by 6IX-F10-N52 View Post
lowers oil temps by 10c/50f.
the plastic cover is a heat trap.
Have someone measure this? I haven't come across any threads on this claim.
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      12-01-2016, 04:26 PM   #1001
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Quote:
Originally Posted by feuer View Post
Have someone measure this? I haven't come across any threads on this claim.
well, I've done it myself lol. I compared temp differences under a variety of driving conditions with and without my engine cover. temps were as followed:

(WITHOUT/WITH COVER)
highway- 100c vs 110c
city- 110c vs 120c+ (would creep into 125c)
on average, easy 40-60f difference for me. average of about 50f.

I basically got temps exactly to where they should be. I was concerned due to my temperatures sitting at 120c quite often in the summer (track temps in the city!)
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