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Autobahn88 High Performance Silicone Vacuum Hose, ID 0.63" (16mm), OD 0.95" (24mm), 5 Feet per reel (1.5 Meter), Black

Autobahn88 High Performance Silicone Vacuum Hose, ID 0.63" (16mm), OD 0.95" (24mm), 5 Feet per reel (1.5 Meter), Black

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$24 USD on Amazon
- Made of premium silicone material to ensure strength and durability - It applies to general purpose air or water transportation in the engine bay - Broad operation temperature : -76F to 374F (-60C to 190C). 60 PSI Maximum pressure rating - optional Colors with Mininum Order Quantity of 50 meters (Blue, Black, Red, Green, Yellow, Orange, Purple, Clear Pink, Clear Blue, Clear White) - Cutomizable ID from 0.08inch (2mm) to 0.63inch (16mm). Cutomizable length up to continuous 300 feet. Please contact us for details

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  1. A

    M56 SULEV valve cover

    2
    21
    2K
     by The_Fixer
    1. Megalocnus

      · Registered
      2005 330i manual transmission performance package
      Joined
      ·
      4,231 Posts
      #15 ·
      demet said:
      Use a smaller 5/16" fuel hose that won't collapse. But that will still result in higher than normal vacuum being created. I regulate the vacuum by bleeding off some vacuum with a hose going to the intake before the throttle body.
      Click to expand...
      He is using an M56 valve cover, which has an integrated CCV, so a 5/16" I.D. hose is too small to fit.
      This is the vacuum hose I use for connecting the M56 valve cover to the intake - thick-walled quality silicone that doesn't collapse: has an inside diameter very close to the stock plastic ribbed hoses, so the corresponding M56 and M54 end fittings can be transplanted right in.

      There are two problems with this swap:
      1. people don't know if the original M56 vacuum regulating valve inside a used cover still works
      2. no one seems to know what are the "normal" crankcase vacuum levels on the SULEV engines.
       
    2. A

      · Registered
      Joined
      ·
      313 Posts
      Discussion Starter · #16 ·
      Yes there is a lot of suction. I had misfires with fuel cut off before. The way it sits now no misfires. Idk cuz more vacuum now. I did change throttle body and intake manifold back to one they came with car cuz my air distribution rail broke.
      Idk if I should put the stock Ccv back on again.
       
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