BMW n54 intake manifold for larger vacuum line mod

kimoboy · 12-18-2021, 04:43 AM

Has anyone done that in N55. He says it will work on N55

95blkmax · 12-20-2021, 07:58 AM

As far as N54s go... I don't see what problem this is solving (and TBH I only watched like 4 mins into it). But he says he wants bigger vac port because the stock one is too small and having larger ones allows the turbos to stay spooled longer? Sounds like something that adjustable BOVs can fix (stronger springs).

I understand the theory behind it, but it seems like a lot of time and work for a bandaid fix when the proper fix is just to adjust your aftermarket BOVs.

That aside, N55 BOVs are electronically-actuated, and even the early N55s with PWG use a vacuum pump and do not rely on IM vacuum for it. So this would be totally useless on an N55 (more so than an N54).

12-18-2021, 04:43 AM	#1
kimoboy Second Lieutenant 47 Rep 292 Posts Drives: E90 335i Join Date: Sep 2014 Location: Earth iTrader: (0)	BMW n54 intake manifold for larger vacuum line mod Has anyone done that in N55. He says it will work on N55
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12-20-2021, 07:58 AM	#2
95blkmax Captain 213 Rep 658 Posts Drives: '11 535 M-Sport Join Date: Nov 2019 Location: Oklahoma City iTrader: (0)	As far as N54s go... I don't see what problem this is solving (and TBH I only watched like 4 mins into it). But he says he wants bigger vac port because the stock one is too small and having larger ones allows the turbos to stay spooled longer? Sounds like something that adjustable BOVs can fix (stronger springs). I understand the theory behind it, but it seems like a lot of time and work for a bandaid fix when the proper fix is just to adjust your aftermarket BOVs. That aside, N55 BOVs are electronically-actuated, and even the early N55s with PWG use a vacuum pump and do not rely on IM vacuum for it. So this would be totally useless on an N55 (more so than an N54). __________________ I'm on the YouTubez now!! Check it out -> https://www.youtube.com/@turbospool 11' M-sport- 371WHP - 478WTQ on stock PWG E50 TunedbyShoup // 386WHP - 429WTQ on Shuenk N55+ with ultra-conservative 91 Octane tune // Starting full-range flexfuel tuning in Spring '24
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