N54Tech.com - International Turbo Racing Discussion
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gyhujbox5 gyhujbox5 is offline
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Car: renualt
Default How unreliable is the N63, from owners? - 09-02-2021, 04:45 AM

I really like the 550 and am considering one but have heard the horror stories about the N63. That said though, I have an N54 that I've basically just done proper maintenance to and have had no issues with. Going on 140k miles on original turbos tuned for the last 80k miles or so. I've had to replace the hpfp once and aside from that its been the things that fail on any car like the alternator and water pump. So my question is, is the N63 like the N54 where some people have a terrible time but for the most part owners dont have a lot of issues as long as they maintain it? Or is it a ticking time time bomb?192.168.0.1 routerlogin 192.168.l.l

Last edited by gyhujbox5; 09-05-2021 at 04:43 AM..
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Mike_L Mike_L is offline
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Car: 2021 M550i xDrive
Default 09-02-2021, 04:17 PM

It’s depends on the version. The early ones are trouble prone. The TUs drink oil. The TU2 and TU3 seem to be no more trouble prone than anything else, just way more expensive to fix when they fail.


Mike Levy
2021 Tanzanite Blue II M550 xDrive
2010 Glacier Pearl Nissan Murano SL
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BMRDude BMRDude is offline
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Car: 2012 550ix
Default 09-02-2021, 08:41 PM

I have had mine since new, early 2012. Been running Dinan Stage 2 since new and JB4 piggybacked on top since 2015, running 20 psi for 6 years.

Only few problems. Replaced turbo oil lines under warranty and Y vacuum connnection on intake. No oil consumption problems but I have changed the oil every 5-8,000 kms unlike nearly everyone else since in those early days, warranty oil changes by the dealer were only recommended every 22,000 Kms!!! Also used true synthetic Amsoil or Mobil.

Been a great car.
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Opac68 Opac68 is offline
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Car: 2013 BMW 550i M Sport
Default 09-03-2021, 11:47 AM

I have a 2013 550i the original engine had the CCP done to it but still ended up having to change out the engine. Prior to changing the engine I had to add oil constantly. After replacing the engine havent had oil consumption problems, but i am still having 02 sensor issues even after changing all of them. So its been up and down but the car is a beast to drive.
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