The GM Factory Mouth Piece restricts air flow to the turbo. The LDS 3.5" Turbo Horn increases air flow resulting in faster spool-up, enhanced turbo whistle, and increased HP. Works great with Factory and drop in replacement turbos, and the Custom Powder Coating really classes up the engine compartment.

**Not designed for use with factory PCV Line or Turbo Resonator Box**

***Use Only with aftermarket 3" y-bridge kit or Aftermarket Basic Intercooler Pipe for Factory Y-Bridge***


Kit Includes:

-3.5" Turbo Horn
-O-Ring
-Powder Coating