Has anyone here used a belt tension gauge from ECUTools? I found one on their site: https://ecutools.eu/ We’re seeing more cars where guessing belt tension “by feel” isn’t reliable anymore, especially on newer engines. Thinking about getting a proper tester that measures tension or frequency. Is it actually helpful in daily work, or do most of you still adjust belts manually?

We bought one recently, and it actually helps. Some belts are super sensitive — a bit too loose and they squeal, too tight and the bearings suffer. With the gauge you at least know the numbers, not guesses.