FuelSync Review: I Tested This “30% Fuel Savings” Device on the Road — Here’s What Actually Happened
Verdict: CONFIRMED SCAM. I drove over 60km with a FuelSync-style device plugged in and measured zero change in fuel consumption. My own road test, combined with a deep dive into the marketing behind it, shows this device cannot do what it claims — because it isn’t even wired to anything capable of doing it. I’d…