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  #37  
Old 11-14-2012, 03:25 PM
LamorindaF80 LamorindaF80 is offline
SSII F80
Location: Orinda, CA
 
Join Date: Apr 2010
Posts: 181
Mein Auto: '15 F80
Quote:
Originally Posted by Stealth.Pilot View Post
I think there could be one of 2 explanations:
1) the 550i engine is identical but detuned.
2) the 550i does not have twin scroll turbo chargers.
The 550GT does not have twin scroll turbo chargers....not part of the N63tu update.
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