It's more reliable, less moving parts, but in order for that to be a consideration you have to show the twins aren't reliable. The newer GC's seem to be doing well in that arena, MMP either has, or will soon have, Garrett turbos, and haven't the China offerings held up so far too? And if your goal is "only" 570, there's even more offerings that are reliable (Pure, RB, etc)
FWIW I daily the single around 650-660 whp estimate (23 psi 14* timing on E85) and I've daily driven twins in that same power range.
The way power is delivered with a single is 10x more fun lol
For pump gas. Yes.Will replacing the stock lpfp with a walbro 450 be enough ?
@twinturbos - You can order a boostbox from DocRace when you order a kit. Otherwise, grab a new JB4 and flash it with the current single turbo firmware.
PCV: I have an RB PCV valve > stock check valve > VTA. However, the recommended way is to have an upgraded PCV valve, catch can, and block the ports above the intake manifold that are under the valve cover.
I believe if you buy the 335d coolant tank you have to buy a matching charge pipe. A stock/upgraded stock charge pipe will not fit with it.