So I wired in a little button that disables the SWAS system this week. I managed to do it in a super stealthy way using the dummy switch blanking plate and a microswitch. Turned out to be quite simple.
It's set up so the microswitch is normally on by default and pressing the button momentarily disconnects the power supply to the SWAS module. This then stays off until the car is restarted, so you can get away a simple off switch, while having the added benefit of it always being on when the car is started.
Now this might all seem well and good and SWAS is the devil etc, but there are unwanted side effects that anyone who is thinking of this mod NEEDS to know about.
Firstly: Disabling SWAS disengages all stability control and traction control. Not the safest option, also why I wired my switch in so it would always be on by default.
Secondly: There is a secondary side effect where the power steering does not boost properly, particularly during low speed maneuvering or instances where you are swerving left or right, slalom style. In these cases you lose a lot of power steering assistance which is in itself potentially dangerous.
I wired this sucker up to try and fix the partial throttle problems that I have been having, but given the power steering bullcrap that it causes, there is a good chance this mod will sit there unused. Even at the racetrack. Hence why I am glad I implemented mine in such a way that it's almost impossible to spot.