I found I have a Unichip piggyback installed in my car. I’ve read mixed reviews, but it’s there and installed. I figured it was always on, and I noted there are 2 switches. Both were turned to off.

Can someone answer which is what? I read one setting is for normal octane the other high octane. The instructions only seem to suggest there is 1 A/B switch and don’t say what low/high octane is. In Canada we have for the most part 91 as high which is all I put in the car.

Any guidance would be appreciated. The instructions I found online are at the link below if anyone has time.




https://www.unichipwholesale.com/wp-content/uploads/2012/08/mini-1620011.0-Installation-Instructions.pdf