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M157/M278 Map Tap

Map Tap for the M157 / M278 AMG engine.

Original price was: $90.00.Current price is: $75.00.

This Map tap will allow you to add a vacuum source to your M157 or M278 to add a boost gauge or water methanol injection kit.

This will lift the ECU about 1/2″ its is HIGHLY recommended you add the standoffs to your order so the ECU can still sit in the pegs.


  • Billet Map Tap
  • Longer Bolt
  • 2x Orings

Click here for the complete installation guide


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