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Old 01-23-2013, 10:36 AM
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Emission Emission is offline
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Originally Posted by Kzang View Post
In this case having two versus one turbo does not mean more means better.

The N54 engine was a parallel twin-turbochargers while the N55 is a single twin scroll turbocharger. Both engines produced same output but the N55 was more fuel efficient, lower emissions, less turbo lag.
Yeah, but the N54 is a better engine from the enthusiast's perspective. More top end power and tuning capabilities. Even BMW knows that.

- Mike
I am fortunate to have unique press cars delivered weekly, but I own:

'16 BMW X5 xDrive35i M Sport 8AT
'15 Volkswagen Golf TDI 6MT
'86 Porsche 911 Turbo 4MT

Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
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