ARB or Viair

[Overland_Dreamrz]

The actual bottleneck is the valve stem....OEM stems do not flow much volume. I use the MorrFlate hose system along with the NAPA compressor ($125, 10.6cfm) and take my 10psi 33's to 36psi in <7 minutes.

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[MSFTMatt]

Regardless of whatever science exists my real world experience is that it takes considerable less time to fill my 4 tires at once then when I woukd have to hook up, fill one tire, unhook and move to next tire.