Quote:
Originally Posted by GreenPlease
The N54 will always be down on the N55 in stock form due to the presence of valvetronic on the N55. Tuneability is a whole different story.
In theory, one could change the exhaust manifold(s) on the N54 to run a single dual-scroll turbo and get (essentially) identical results to the current twin turbo setup.
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Are you referring to power or MPG? Because valvetronic has nothing to do with power.
The advantage of the single turbo twin-scroll vs. twin setup would be the reduction in the amount of plumbing...and with the twin scroll setup you would be able to take advantage of the exhaust pulses to help reduce lag and use the exhaust flow more efficiently.
I'm curious as to why they would go back to a MAF rather than a MAP system. Any thoughts?