Eco OBD2+（Drive Nitro） Chip Tuning Box. Plug and Drive OBD2 Chip Tuning Box. It works based OBD2 protocols as remapping the Car's computer ECU. EcoOBD2 is easy to install. Just plug it into the OBD2 connector of cars.
eBay
7 Color Light 2" 52mm Fuel Level Gauge+Fuel Float Level Sensor 0-190 Ohm for Marine RV Camper Car Oil Tank Level Indicator 9-32V
Aliexpress UK
Enhanced Engine Performance: This fuel saver optimizes your vehicle's power, torque, and fuel efficiency, smoother starts and improved response for an enhanced driving experience. Car fuel-saving machine 1PC.
eBay
Auto Digital 52mm Fuel Level Gauge With Alarm Light 0-190 Ohm Oil Tank Indicator Meter Marine Fuel Level Sensor 100-600mm 12V24V
Aliexpress UK
Once in place, Firemizer reduces the burn rate and spreads the heat evenly across your fire to ensure all of the fuel is burnt thoroughly, enabling you to enjoy your perfect fire for longer and cut costs on firewood & coal.
eBay
7 Color Light 52mm Fuel Level Gauge+Fuel Float Level Sensor 240-33 OHM for Auto Car Boat Waterproof IP67 Oil Tank Meter 12V 24V
Aliexpress UK
Enhanced Engine Performance: This fuel saver optimizes your vehicle's power, torque, and fuel efficiency, smoother starts and improved response for an enhanced driving experience. Car fuel-saving machine 1PC.
eBay
100-500mm Stainless Steel Marine Fuel Level Gauge Sensor Fit Boat Car Fuel Level Gauge Meter 0-190 ohm with Red Backlight 9-32V
Aliexpress UK
2 x Tighten Band. Install magnet as close to engine as possible. 50% reduction of carbon monoxide and hydrocarbons. Reduced wear on O2 sensor and catalytic converter. High octane performance with lower octane fuel.
eBay
0-190 ohm 240-33ohm Water Level Gauge Meter 125mm 150mm 200mm 250mm 600mm Fuel Level Sensor Fuel gauge for marine boat car Truck
Aliexpress UK
Eco OBD2+（Drive Nitro） Chip Tuning Box. Plug and Drive OBD2 Chip Tuning Box. It works based OBD2 protocols as remapping the Car's computer ECU. EcoOBD2 is easy to install. Just plug it into the OBD2 connector of cars.
eBay
Stainless Steel Fuel Level Sensor 240-33 OHM Digital 2" 52mm Fuel Level Gauge with Red/Blue LED for Gasoline Car 12V
Aliexpress UK
Stop scale build-up and corrosion in the engine ! Although the benefits may be evident almost straightaway, for best results allow up to few thousands miles. Magnetic Fuel Saver gadgets increase combustion efficiency for a cleaner burning engine.
eBay
Customized 0-190 ohm Fuel Float Level Sensor 100-500mm 2 IN 1 LCD Gauge Fuel Level Meter+Voltmeter for Auto Car Truck 12V 24V
Aliexpress UK
Independent tests show that Revitalizant increases engine compression, increases horsepower, reduces emissions, and improves gas mileage! EX120 is compatible with all types of motor oil, including full-synthetic.
eBay
12V Automotive Gauges Universal 2" 52mm Fuel Level Gauge 240-33ohm Fuel Float Sensor fit 5in-27in Tank Height Auto Car Meter
Aliexpress UK