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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 > Balloon releasing air noise on WOT. Boost leak?



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      09-06-2019, 03:44 PM   #1
PDR
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Balloon releasing air noise on WOT. Boost leak?

Howdy guys. I have what I believe to be a boost leak but would like to have someone verify. Lately my car has been running somewhat rough and Iím starting to suspect an underlying issue (electrical, plumbing, fuel delivery). I have attached a link to my log but really donít know how to interpret the graphed values. Any help is appreciated!

https://datazap.me/u/fdr/full-thrott...og=0&data=3-15

Mods on N55 (93oct):

MHD Stage 2+
VRSF Catless DP
VRSF Charge Pipe
VRSF 7Ē Race IC
BMS Intake

Last edited by PDR; 09-06-2019 at 04:04 PM..
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      09-06-2019, 05:04 PM   #2
weehe126
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Yes
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      09-07-2019, 08:45 AM   #3
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Check the chargepipe meth bungs I had a leak from them. And make sure the clamps sit just past the bead of the coupler, it must be tight.
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      09-26-2019, 03:32 PM   #4
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Not holding boost.

Hopefully this first reply gets me fully Registered as a Bimmerpost member!!
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      09-26-2019, 03:37 PM   #5
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The clamps may need to be checked. Must be very tight!
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      10-03-2019, 12:07 PM   #6
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Appreciate the responses. I think I'll do a pressure test on the system. Can anyone confirm if this is the fitting I need for a VRSF charge pipe (for one of the bung holes )?

https://www.amazon.com/gp/product/B0...8VYUVWOH&psc=1
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