Welcome To the Hewitt Technologies Inc. Store.

Home of the Hewitt-Tech Toyota/Lexus Secondary Air Injection System Bypass Kits. These kits offer a cost effective solution for the failure prone Secondary Air Injection Systems found on certain Toyota truck and SUVs. The bypass kit can prevent many of the trouble codes caused by a mechanical failure of the secondary air pump or a secondary air valve saving you as much as a $2000-$4000 on a repair bill, turn off your CEL and keep the vehicle out of limp mode. The kit is not a fix all solution so check our codes section and installation instructions for more info on how the kit can help you. You can also use the Contact Us page to contact us with any questions regarding the bypass kit, shipping or your trouble codes.



In observance of Martin Luther King Jr Day, the USPS will be closed Monday, January 21st, 2019. All USPS orders placed after 4:00PM EST on Friday, January 18th will be shipped out Tuesday, January 22nd.

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1-844-307-7671


Click on the Product Category Listings at Top Left or a Featured or Bestseller image to view the Full Product Descriptions

Featured Products
2005 - 2007 Plug & Play SAIS Bypass Kit
SKU: V36H
$259.00
5.0 Out Of 5 (5.0 on 36)
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 made easy. Click here for more details!
Select Your Vehicle, Year, Engine:
2008 - 2012 Plug & Play SAIS Bypass Kit
SKU: V54H
$349.00
5.0 Out Of 5 (5.0 on 23)
The Hewitt-Tech SAIS Bypass Kit Plug and Play is available now for newer vehicles and can prevent many of the trouble codes caused by a mechanical failure.
Select Your Vehicle, Year, Engine:
2005 - 2007 Wired SAIS Bypass Kit
SKU: V36W
$168.00
5.0 Out Of 5 (5.0 on 12)
The Hewitt-Tech Wired SAIS Bypass Kit prevents operation of the SAIS at cold start thus letting you clear your related trouble codes, the CEL and Limp mode. Installs by wiring directly into the IAT/MAF Sensor harness. Click image for more details!
Select Your Vehicle, Year, Engine:
Coming Soon! Next Gen. Bypass Kits
SKU: 82
$0.00
Our Next Gen. Bypass Kits are a huge leap forward compared to all previous bypass kits. Complete Plug and Play, no triggering, no relay connection, just install and clear ALL your SAIS codes.