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      10-18-2013, 09:51 AM   #7
dparm
But doctor...I am Pagliacci.
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Quote:
Originally Posted by thekurgan View Post
I'm not speaking of the S65, the newer M3/M4 uses valvetronic, DI, like the N55, N20 and the rest of the turbo lineup.

Audi seems to have drastically reduced the buildup on their newer motors (3.0TFSI, 2.0TFSI). They did this with a new and more complex vapor reclamation system. I saw photos of the valves on those cars at 60k and they looked pretty good.

I would assume BMW has improved the technology in the newer motors as well.
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