Quote:
Originally Posted by RizOne
Thanks for the great responses. I am more concerned about the oil cooler. It specifically mentions it in 335is specs but not on Z4 35is specs. It does not say valvetronic for the 335is. They both have the N54 with 2 turbos right and not the N55 with single "twin scroll" turbo. This is my understanding. I also thought the N54 was not a valvetronic engine. Still a little confused I guess.
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Yes both the Z4 35i and 35is use the N54 with direct injection, 2 turbos and no valvetronic, and it seems none of them will ever get the single-turbo N55 engine.