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Tech Blog

P2440 Secondary Air Injection System (Toyota & Lexus)

The SAIS Code Series Blog is written and intended for Toyota & Lexus Vehicles If you are reading this article, you already know the Secondary Air Injection System on Toyota and Lexus vehicles is failure prone. The Secondary Air Pumps and Air Switching Valves are notorious for Mechanical and Electrical fault codes. Unfortunately, the reality…

Secondary Air Injection Bypass Kit Comparison

How Do You Fix the Secondary Air Injection System? The most expensive option is having Toyota or Lexus repair with factory or OEM components. On average, most dealerships quote $2,000 to $3,000 for parts and labor. However, this option may not address all secondary air components or prevent future failure. Save time and money by…

What Do My SAIS Error Codes Mean?

Error codes, or diagnostic trouble codes (DTCs), consist of alphanumeric characters that correspond to specific issues with a vehicle. When a DTC is tripped, the check engine light (CEL) will appear on the dash. Once a CEL appears, it is important to use an OBDII scanner or another scan tool to read the DTCs. If…

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.