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Gen II - Our Gen II kits emulate the operation of the SAIS and ECM will read as Ready/Completed. It also eliminates all trouble codes dealing with the SAIS with the exception of the pressure sensor. Installs at the Air Injection Driver and Air Switching Valves. This is our recommended solution because it is the most comprehensive kit we offer.

Gen I - Our Gen I kits will prevent the SAIS from operating on a cold start and ECM will read as Not Ready/Incomplete. With this unit, all of the SAIS parts/components will need to remain in place for the computer to see continuity to them. Installs at Mass Air Flow sensor and Engine Coolant Temperature sensor. Also, the starter relay wire will need to be run from the bypass module to a terminal inside the fuse box.

Gen II Gen I
  • Covers both mechanical and Electrical SAIS error codes
  • Compatible with Toyota's current ECM Computer flash
  • Compatible with Flex Fuel Modes
  • Clears permanent codes
  • Covers only mechanical SAIS error codes*

*Kit Addons needed for each the following electrical codes: Codes P0418 & P0419 Each Require A Pump Proxy Pack, Codes P0412 & P0415 Each Require Valve Solenoid Pack

*When placing your order online be sure to select your Model/Year/Engine Size on the product page to ensure you receive correct kit

Please note, if there is any damage to the pressure sensors, Kit Addons would be needed for both Gen I and Gen II Kits. Contact us if you have any additional questions (844) 307-7671 or support@hewitt-tech.com

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2005 - 2007 Plug & Play SAIS Bypass Kit
SKU: V36H
55 Review(s)
The Hewitt-Tech SAIS Bypass Kit Plug and Play prevents operation of the SAIS at cold start thus letting you clear your related trouble codes, the CEL and Limp mode and installation ma
$259.00 $190.00

Select Your Vehicle, Year, Engine:
2008 - 2014 Plug & Play SAIS Bypass Kit
SKU: V54H
35 Review(s)
Plug and Play Bypass Kit Covers 2008-2012 and select 13 and 14 models vehicles. Can prevent many of the trouble codes caused by a mechanical failure of the SAIS System.
$349.00 $230.00

Select Your Vehicle, Year, Engine:
2005 - 2007 Wired SAIS Bypass Kit
SKU: V36W
15 Review(s)
Wired SAIS Bypass Kit. Wires directly into MAF sensor wiring. Recommended for Professional Installation Only! Installation error not covered under warranty.
$169.00 $140.00

Select Your Vehicle, Year, Engine:
Gen-II SAIS Bypass Kit
SKU: GenII
23 Review(s)
The best solution available. Emulates the entire system by replacing the air injection control driver(s). Require good pressure sensors or PSO but no other kit add-ons are needed for codes like the GenI units.
$450.00 $400.00

Select Your Vehicle, Year, Engine:
Gen-II SAIS Bypass Kit (3-Valve)
SKU: GenII-3V
The GenII unit for those 4.7L vehicles with the SAIS located completely underneath the intake manifold. To make 100% plug and play requires removal of the intake manifold otherwise requires 3 wire tap connections to be made at the ECM.
$450.00 $400.00

Select Your Vehicle, Year, Engine:
Pump Proxy Pack (PPP)
SKU: PPP
1 Review(s)
An alternative to replacing the SAIS Air Pump that is causing a P0418 or P0419. This is just a proxy for the bad pump must have bypass kit installed to use. Big labor/money saver! Must Be Installed With A Bypass Kit!
$155.00