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BYPASS YOUR SAIS AT A FRACTION OF THE COST OF REPLACING

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Tech Blog

Secondary Air Bypass Kit Comparison

Hewitt Tech Bypass Kits come in two Generations, Gen 1 and Gen 2. When deciding which kit is best for you please note that our solutions are both vehicle specific and error code specific. That said, compatibility depends on the Year/Model/Engine Size of your vehicle. Additionally, the error codes that are present will play a…

What Do My SAIS Error Codes Mean?

Error codes or Diagnostic Trouble Codes (DTC) consist of alpha and numeric characters that correspond to specific issues with the vehicle. Any time a DTC is tripped you will see the Check Engine Light (CEL) on your dash. Once you see a CEL it is important to use a scan tool to read your DTCs.…

What is the Secondary Air Injection System?

The Secondary Air Injection System (SAIS) is a part of the vehicles exhaust system. Manufacturers began introducing them in the 1960’s to help reduce hydrocarbon and carbon monoxide emissions, both of which are result of incomplete combustion. On Toyota and Lexus vehicles that have SAIS it is only commanded to operate after a cold start,…

Welcome To the Hewitt Technologies

Hewitt Tech is the Home of the Original Secondary Air Injection System (SAIS) Bypass Kits for Toyota & Lexus vehicles. These kits offer a cost effective solution for the failure prone SAIS found on certain Toyota & Lexus trucks and SUVs. The bypass kit and kit addons can prevent many of the trouble codes caused by mechanical or electrical failure. Most common failures occur in secondary Air Pumps, Air Switching Valves and Air Injection Drivers. On average, replacing the Secondary Air Injection System can cost between $2,000 - $3,000. Unfortunately, even if you decide to replace these components it is likely you would run into the same issues in the future. That said, if you want to get out of Limp Mode, turn off your Check Engine Light, avoid future failures and save thousands of dollars; a Hewitt Tech Secondary Air Injection Bypass kit is what you need. Our products are made in the USA at our Headquarters located in Lexington, SC and we ship both domestically and internationally. We welcome your questions and encourage you to contact us; Hewitt is here to help you find the right solution.