Many 135i /335i owners say boost leak. It has been looking the problem for a long time ~ ~ Finally found that original air induction pipe damage. The most common is broken and leaked. Replace with our FTP air induction pipe. Let charge pipe more complete. Increase throttle response and decreases turbo lag.
Powdercoated black aluminum piping.
Throttle body matched 3 "piping.
 Billet CNC OEM TB Flange for a leak-free connection.
  Includes everything necessary to upgrade from the factory charge pipe.

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