Quote:
Originally Posted by Bluenose-2er
I notice that there is a heavy bias of opinion... those with an M2 seem to be much more likely to be in the N55B30T0 is closed deck, while those without an M2 seem much more likely to be in the open deck camp.
I am of the IDGAF camp. If I do tune my M2, it won't likely be to much more than 400hp, which I am pretty confident the N55B30T0 can take whatever the deck.
Can we agree that there is nothing else to say until someone has a photo of the N55B30T0 with the top off? All the stock photos or CAD images of the "N55" don't mean much.
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And the regular N55 block is good for much more than that...so no worries at all. You could be shooting for 500 or 600 bhp and not have worries. Which is why it was so dumb for some people to hang on the closed deck thing as this big improvement. The regular block is absolutely fine for the application.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs)
'14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat)
'08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat)