they don't include it. It's an extra $50 or so. If you have an MSD ignition, the tach is not required. Not exactly sure why the brains at hahn wants you to use this rather than just tapping into your RPM signal at the ECU
Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim