Current Installation Instructions

Installation Instructions

Click on the links below to download PDF copies of installation instructions for the Hewitt-Tech bypass modules and other products. Our bypass modules also come with color-printed copies of our instructions for your convenience. Call us TOLL-FREE at 1-844-307-7671 for more details about installing the Hewitt-Tech bypass modules and other products.


Module Installation Instructions:


Gen-II Installation Instructions:

   5.7L Tundra, Sequoia, LX570, Landcruiser

   4.7L 07-09 Tundra, 08-09 Sequoia

   4.6L Tundra, Sequoia

   4.6L GX460

   4.0L Tundra, 4Runner, FJ Cruiser

   4.0L Tacoma

   2.7L Tacoma


Gen-II 3-Valve Installation Instructions:

   4.7L 05-06 Tundra, 05-07 Sequoia, All 4Runner, All GX470, All LX470, All Landcruiser
  *These are the 3- Valve 4.7L vehicles that have 1x air pump, 1x EASV and 2x #2 ASV underneath the intake. These Gen-II bypass kits are not 100% plug and play. The Gen-II unit on these vehicles also requires 3 wires to pass through the firewall to make connections to the ECM wiring behind the glovebox.

Gen-II PSO Installation Instructions:

Pressure Sensor Option Installation Instructions

Gen-I Bypass Module Installation Instructions:

  Vehicle Year 2005-2007
    V36H Plug and Play Installation Instructions
    V36W Wired Installation Instructions

  Vehicle Year 2008-2014
    V54H 5.7L Installation Instructions
    V54H 4.7H Installation Instructions
    V54H 4.6L Installation Instructions
    V54H 4.0L Installation Instructions
    V54H 2.7L Installation Instructions

Block Off Plate Installation Instructions By Engine:

   Plate Installation Instructions 5.7L
   Plate Installation Instructions 4.7L
   Plate Installation Instructions 4.6L
   Plate Installation Instructions 4.0L
   Plate Installation Instructions 2.7L


Kit Addon Installation Instructions:

SAIS Pump Proxy Pack Installation Instructions:

   SAIS Pump Replacement Pack Installation Instructions

Gen-I Plug and Play Pressure Sensor Replacement Harness Installation Instructions:

   Pressure Sensor Replacement Harness Installation Instructions  Generic, No Pictures
   Pressure Sensor Replacement Harness Installation Instructions 
   Pressure Sensor Replacement Harness - Double Installation Instructions  Generic, No Pictures

Gen-I & Gen-II Wired In Pressure Sensor Replacement Installation Instructions:

   Tundra   4.7L 05-06
   Sequoia 4.7L 05-06
   LX470    4.7L 05-07
   GX470    4.7L 05-09
   Land Cruiser    4.7L 05-07

Wire Diagrams for Current V36W by vehicle/engine/year:

Tundra 4.0L 2007   .pdf
  4.7L 2005-2006 .pdf
    2007   .pdf
  5.7L 2007   .pdf
Sequoia 4.7L 2005-2007 .pdf
  5.7L 2007   .pdf
4 Runner 4.7L 2005-2007 .pdf
Tacoma 2.7L 2005-2007 .pdf
LX470/LX570 4.7L 2006-2007 .pdf
GX460/GX470 4.7L 2005-2007 .pdf
Land Cruiser 4.7L 2006-2007 .pdf