Automotive Fuel-Saving Scams vs. Real Upgrades
OBD2 "Fuel Saver"/"Tuner" Plugs — Confirmed Scam
Nitro OBD2, ecoOBD2, NeoSocket, OBDIIcats, and the many identically-functioning clones sold under other brand names.
Not a subjective "didn't work for me" review — physical proof. Multiple independent electronics teardowns (VoltLog, bigclivedotcom, Quarkslab) opened these devices and found only a 555 timer chip and an LED driver: no microcontroller, no firmware, no connection to the OBD2 port's actual data pins. The device physically cannot communicate with your car's ECU — it's an electrically inert blinking light plugged into a port that happens to fit. If a listing claims plug-and-play ECU remapping or fuel savings from something under $20 with no vehicle-specific programming, it is not real, regardless of which brand name is on it this month.
Confirmed scam via independent electronic teardown, not just skepticism — do not buy regardless of marketing claims or brand name.
No buy links — flagged, don't buy this.