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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 > No boost



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      05-26-2019, 06:45 PM   #1
Chris1337
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No boost

fbo e85 n55
was doing a pull and heard a loud bang and was no longer boosting. Turbo sounds like it's whistling a lot no codes just air mass too high
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      05-26-2019, 06:53 PM   #2
weehe126
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Charge pipe/IC coupler....?
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      05-26-2019, 06:58 PM   #3
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Most likely you blew the charge pipe.
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      05-27-2019, 11:37 AM   #4
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CP couple popped off, thanks guys
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      05-28-2019, 10:07 AM   #5
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Originally Posted by Chris1337 View Post
CP couple popped off, thanks guys
Just FYI, ANYTIME you get a "air mass too high" Code. Its most likely a boost leak. Ive heard the magic trick is hairspray surprisingly.
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      05-29-2019, 10:20 AM   #6
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Quote:
Originally Posted by DiFFv1 View Post
Quote:
Originally Posted by Chris1337 View Post
CP couple popped off, thanks guys
Just FYI, ANYTIME you get a "[COLOR="Red"]air mass too high[/COLOR]" Code. Its most likely a boost leak. Ive heard the magic trick is hairspray surprisingly.
Elaborate?
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      05-29-2019, 10:57 AM   #7
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Quote:
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Elaborate?
On which part ? You didn't specify at all lol

Air mass too high is either a boost leak (Most Likely) Or it could be The EGR valve is permanently open/Closed resulting in the amount of returned exhaust gas is much higher than required. Resulting in the air mass sensor measuring less air than calculated by the ecu. Or it could just be the sensor and/or wiring. Plus more!

Asfar as the hairspray statement, Thats only for a slippery coupler.
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Last edited by DiFFv1; 05-29-2019 at 11:04 AM..
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      05-29-2019, 12:51 PM   #8
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Quote:
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Quote:
Originally Posted by E90joee View Post
Elaborate?
On which part ? You didn't specify at all lol

Air mass too high is either a boost leak (Most Likely) Or it could be The EGR valve is permanently open/Closed resulting in the amount of returned exhaust gas is much higher than required. Resulting in the air mass sensor measuring less air than calculated by the ecu. Or it could just be the sensor and/or wiring. Plus more!

Asfar as the hairspray statement, Thats only for a slippery coupler.
Lmao mostly on the hair spray part, but I got air mass to high every now and then idk if its my intake or maf but now idk if I'm looking boost thanks
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      05-29-2019, 01:28 PM   #9
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Lmao mostly on the hair spray part, but I got air mass to high every now and then idk if its my intake or maf but now idk if I'm looking boost thanks
What kind of intake are you running if you don't mind me asking? And when is the last time you used sensor cleaner and sprayed your Mafs?
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      05-30-2019, 10:13 AM   #10
E90joee
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What kind of intake are you running if you don't mind me asking? And when is the last time you used sensor cleaner and sprayed your Mafs?
bms n55 intake, I actually haven't cleaned the maf yet haven't had the time.
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      05-30-2019, 10:18 AM   #11
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bms n55 intake, I actually haven't cleaned the maf yet haven't had the time.
Nice, Im running the Injen Intake. And when you get a chance i would try to clean those.
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      05-30-2019, 10:23 AM   #12
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Nice, Im running the Injen Intake. And when you get a chance i would try to clean those.
eh not to fond of it, with the placement it prob sucks way more hot air than anything. just got it cause it was the cheapest thinking of upgrading to the injen one with the hood vent attatchment
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      05-30-2019, 12:16 PM   #13
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eh not to fond of it, with the placement it prob sucks way more hot air than anything. just got it cause it was the cheapest thinking of upgrading to the injen one with the hood vent attatchment
Funny you say that as i said the same thing, i ended up using exhaust heat shield wrap and wrapping my intake in it. IATs came down a couple degrees surprisingly. And im not too upset about the look of it under the hood aswell.
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