Just got my personal license package the other day. I did the groove on it today, my first groove and I was nervous but confident I will do a good job. Getting to the throddle body wasn't a easy job, I took my time and with some youtube help I got to the throddle body. Doing the groove on it wasn't to bad. I put a business card in position, unhook the negative battery cable and jumped it to the positive to reset the ECU, cleaned, grooved, cleaned, reassembled went pretty smoothly.
Took the bug for a test drive. Didn't have a outstanding change but it did run smoother. This is my wifes car, and I had her do the test drive. She dolled up the car so much I refuse to drive it. So these are her words. The bug got between 16.5 to 19.0 mpg. Thats mostly highway miles, she drives 30 mile one way to work. I will post the results in about a week. I smelled the exhaust and there still some gas smell. We'll see what happens.