Need to control fuel pressure but don't' want to plumb in an external regulator? Now you don't have to if you have a factory equipped EFI VW or Audi. Regulator is adjustable from approx. 3.3-5+BAR, and mounts in existing factory regulator provisions in the stock rail. May also fit other factory applications.

Note, our regulator has a groove machined in the body to allow the use of the OEM regulator clip, be aware of others on the market that do not. , and thus cannot use the stock clip.