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E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio - General Forum
The E9X is the latest evolution of the BMW 3 series including the highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! Post questions about "upgrading" from your current E46 here or jump over to E90Fanatics.com!

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Old 04-29-2013, 11:35 AM   #1
luddy45
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Join Date: Jan 2013
Location: Dumont, NJ
Posts: 4
My Ride: 2008 BMW 335i
Engine operating on reduced power

I have a 2008 335I, with sports package and 76K miles on it. Each time the car undergoes excess pressure while accelerating, I get the message engine operating on reduced power. I took the car in to BMW and did a diagnostic. The code 30FE, and the advisor said I need to change the 2 bypass valves on the turbo and also the molded houses the is conected to it. I want to know where else I can get the parts for this apart from at BMW, can someone please help me?
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Old 08-29-2013, 05:42 PM   #2
excalbr8
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Join Date: May 2010
Location: Beith, Scotland
Posts: 18
My Ride: 2008 335I M Sport
Hi,
Mine did that 2 weeks ago. Every time I tried to accelerate it went into the same limp home mode. My problem was the High Pressured a 1 year warrenty as I fuel pump. my car is a 2008 model as well with 45k on the clock. BMW replaced it after looking at the car for a day, then decided itr was the pump. If I drove gently it worked fine, as soon as I accelerated it hesitated then went into limp home mode. Didnt have any error code on the systrem, but the symptoms seem very similar.
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Old 08-30-2013, 01:37 PM   #3
billschroeder5842
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Join Date: Dec 2010
Location: Southlake, TX
Posts: 77
My Ride: 2008 335ci
Mine did the same. BMW replaced both turbos. Everything works as it should.

Thank God for warranties.
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2008 335Ci
2008 528
2010 328
2004 Z4
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Old 04-18-2014, 08:28 AM   #4
jamesT335I
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Join Date: Aug 2013
Location: germany ( us army)
Posts: 114
My Ride: 2009 E-92 335i
Turbos have an 8yr 80k mile warranty

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Old 05-08-2014, 11:27 PM   #5
sammy.so.so
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Join Date: May 2012
Location: arlington,va
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My Ride: 2004 330xi
So I have an internal oil leak in my turbos , would it be covered under the lawsuit warranty?? It's 2008 335i btw


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Old 05-15-2014, 01:50 AM   #6
rubinomark1217
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Join Date: Apr 2014
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Happened to me on my 07 335i e90 with 45k mi, turned out to be a solenoid. Fully covered through dealer.


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Old 05-22-2014, 05:40 PM   #7
d'ray18
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Join Date: Jun 2009
Location: Los Angeles
Posts: 970
My Ride: E90 335
BMW should just do a recall on those turbos, either way as others have said you have extended warranty on them up to 80K miles so get them replaced for free asap!
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Old 05-23-2014, 11:00 PM   #8
wildcatcrazy
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Join Date: Mar 2014
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Quote:
Originally Posted by luddy45 View Post
I have a 2008 335I, with sports package and 76K miles on it. Each time the car undergoes excess pressure while accelerating, I get the message engine operating on reduced power. I took the car in to BMW and did a diagnostic. The code 30FE, and the advisor said I need to change the 2 bypass valves on the turbo and also the molded houses the is conected to it. I want to know where else I can get the parts for this apart from at BMW, can someone please help me?
If you're still having the issue and looking for those diverter valves, let me know. I will sell both for $50 plus you cover shipping. They were just removed after 35k miles when I upgraded to a AA charge pipe.Click image for larger version

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Old 07-11-2014, 10:37 AM   #9
edmaz335
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My car is having the same problem. Did you end up fixing yours?


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