The 1.8T SAI (Secondary Air Injection) system is designed to reduce emissions during cold starts. However, it can be prone to failure, leading to costly repairs. A 1.8T SAI delete kit offers a solution by removing the system entirely. This guide provides a comprehensive overview of the process, including necessary parts, tools, and step-by-step instructions.
Understanding the 1.8T SAI System and Why Delete It
The SAI system pumps air into the exhaust manifold during cold starts to aid in the combustion of unburnt fuel, reducing emissions. While effective, components like the SAI pump, combi valve, and associated vacuum lines can fail, leading to fault codes, rough idling, and potential engine damage. A delete kit eliminates these potential issues and simplifies the engine bay. This guide covers compatible engine codes including AWP, AWD, AUQ, AWW, AWV, and AWM. If your engine code isn’t listed but you’ve successfully used this guide, please let us know so we can update it.
Parts and Tools Required for 1.8T SAI Delete
Before starting the deletion process, gather the necessary parts and tools. A pre-assembled 1.8T SAI delete kit simplifies the process, but you can also piece it together yourself.
Essential Components:
- Integrated Engineering Block Plate
- 4 x 10w 330OHM Resistors
- 8 feet of 3/4″ Hose
- 4 feet of 1/2″ Hose
- 4 feet of 5/32″ Vacuum Line
- 2 x 3/4″ 90 Degree PCV Elbows
- 1 x 3/4″ PCV “T” Connector
- 12 x Medium Hose Clamps
- 6 x Small Hose Clamps
- Assorted Small Vacuum Caps
- Assorted Large Vacuum Caps
- Homebrew Catch Can
- G12 Coolant
Optional Parts (Recommended):
- Coolant Neck (Automatic: 06A 121 133 AH, Manual: 06A 121 132 AP)
- Newsouth Performance Power Gasket or Stock Intake Manifold Gasket
- Oil Pressure Sender and Aftermarket Gauge (Utilize the port on the oil filter housing)
Tools:
- Gloves
- Flathead Screwdriver
- Allen Wrenches or Allen Bits (5mm, 5.5mm, 8mm, and others as needed)
- Socket Set (8mm, 10mm, and others as needed)
- Cutters
- Soldering Iron and Solder
- Electrical Tape
- Zip Ties
- Jack and Jack Stand (Safety First)
Step-by-Step 1.8T SAI Delete Installation Guide
The following images provide a visual guide to the installation process. Remember to disconnect the battery negative terminal before starting any work.
Final Steps and Considerations
After completing the installation, double-check all connections, wiring, and vacuum lines. Clear any fault codes using a diagnostic tool. Remember that modifying emissions systems may violate local laws and regulations. This guide is for informational purposes only, and carw.store assumes no responsibility for any damage or legal issues arising from this modification.
