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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 > N55 New Bolt ons. Possibly Boost Leak?



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      10-05-2018, 06:41 AM   #23
jduplooy
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Got it done! I am in the Atlanta area and used a shop called Solo Motorsports and they fixed it in minutes.

Turns out I was getting small boost leaks at 2 couplers. Turns out I was a little nervous to damage piping so I didn't tighten the clamps down enough.

Car pulls hard and sounds great. Definitely a more noticeable turbo spool, but nothing extraordinary as before. I guess that is just the extra boost, etc.


I probably need to do plugs next I guess.

Thanks to all for you input!
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      10-05-2018, 09:52 AM   #24
C2YT
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Glad to hear man! Some times it is just an easy fix like that. Take another log and send it so we can compare.
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      02-09-2020, 04:37 PM   #25
andrews920
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Did they happen to say which couplers were leaking? I'm getting the same noise. N55's shouldn't sound like they have superchargers!
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      02-09-2020, 04:43 PM   #26
jduplooy
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Yeah it was the couplers on the passenger side of the car...you have to tighten those LIKE CRAZY
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      03-15-2020, 12:40 PM   #27
lisabosken
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Quote:
Originally Posted by jduplooy View Post
Yeah it was the couplers on the passenger side of the car...you have to tighten those LIKE CRAZY
I’m glad you got it all worked out! Could you please post a most recent log regarding your actual boost and boost target values across the revs? And the wgdc in relation to them? How much did it improve? Greatly appreciated man, thanks!
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