I can second this. I had to travel from Montana to Seattle to take my daughter to her appointment at Seattle Children's Hospital last week. I'd heard Matthew at Zahntech was highly recommended so I had him do some work on my Golf. It has 170k miles on it and figured it was time for new injectors. My
fuel mileage and power had been going down hill.
I'm going to be putting a ton of miles on it so wanted him to look it over.
He looked it over, installed new balanced Titan 520s, cleaned the intake, changed the brake fluid, cleaned a bit under hood (including a mouse nest that I just noticed had happened during the winter). Think there was more- but can't remember the whole list right now.
Now the car is running great, it is fun to drive, and is getting good mileage again.
The first tank was around 600 miles and I got 43 mpg out of it. Some of that was playing with new found power and going over several passes.
Yesterday and today I drove from Montana to Morgan Hill CA. First tank was 46 mpg, and today I drove 725 miles from Twin Falls ID to Morgan Hill. My
fuel light is about to come on, but hasn't yet.
I'm very happy.