VR6 12V SAI Delete Guide; All You Need to Know.

VR6 12V SAI Delete Guide; All You Need to Know

The SAI system has no effect on how the engine starts, whether it is hot or cold. The SAI system’s purpose is to help the catalytic converter reach operating temperature faster, reducing start-up emissions. This was necessary for the 1.8T to receive a ULEV rating.

The removal of the SAI system has several drawbacks. You’ll get a CEL unless you have the SAI written down. You mentioned that there is only a visual inspection for emissions where you live in Virginia.

This comes as a big surprise to me, and I don’t think it’ll last long. You will fail emissions unless you have it written down if they go to checking readiness switches. Even so, if VA ever resorts to forcing a reset, you may fail.

Table of Contents

How to code the SAI system?

The SAI system can be effectively coded out using ME7 software that has been tuned. It can be done for stock tunes as well as any other tuning stage. There are two ways to code it out.

One method will still allow you to pass inspection, but few tuners are aware of it. Mechanics in Massachusetts use this method to pass vehicle inspections. The SAI pump can be removed and the block-off plate installed using this method, but the N112 valve must remain in place. 

As if the system were still installed, this method allows the SAI diagnostic functions to run and pass.

The other method simply turns off the DTC and activates the readiness bits. This is the most common method, but it will fail in states with newer inspection computers.

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The VR6 12V SAI Delete Guide: The exact steps.

  1. Locate the SAI pump motor, which is located directly behind the radiator. After that, trace all of the lines/hoses and determine where they all went.
  2. Second, remove the bracket that holds the pump motor. The oil pan has two bolts, and the cylinder block has one bolt. They are located directly beneath the oil filter housing. The Harness connector on the pump must be disconnected.
  3. To remove less hose from the bottom, disconnect half of the pressure hose on the side of the engine. Pushing in and pulling on these hoses disconnects them. Remove the pump from the bottom of the radiator hoses.
  4. To gain better access to the Combi-valve, remove your intake tubing. It’s a pain in the neck, but not too bad.
  5. Now that you’ve gained access to the Combi-valve, you’ll need to disconnect the radiator hose. 
  6. It may be difficult, but persevere and take your time removing it because you will still require it. There are three bolts: one on top, one on the bottom, and one in the middle of the radiator hose and the Combi-Fitting Valve’s Flange
  7. You’ll need to disconnect and relocate the ground wire. It can be placed directly on top of the Valve cover. 

Axial Inclination in Steering (SAI); {The other component named SAI}

When viewed from the front of the vehicle, SAI is the measurement in degrees of the steering pivot line. When this angle is combined with the camber to form the included angle (see below), the vehicle lifts slightly when the steering wheel is turned away from straight ahead. 

When you let go of the steering wheel after making a turn, the weight of the vehicle causes it to return to the center. As a result, if the SAI varies from side to side, a pull will occur at very slow speeds. 

Most alignment machines have a way to measure SAI, but it isn’t adjustable separately. The most common cause of SAI failure is bent parts, which must be replaced to fix the problem. On trucks and old cars with kingpins instead of ball joints, SAI is also known as KPI (King Pin Inclination).

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