Review on 🚗 Volvo Performance Chip/Power Programmer - Boost Fuel Mileage, Save Gas & Increase HP by Marco Maurer

I didn't do enough research before buying. I returned it for a refund. I had no intention of hooking this up to my factory MAP to trick the computer into thinking the air going into the intake is colder, so I add more fuel. It might work, but if I personally need/want more horsepower/fuel economy I'll change some hardware and get a real ECU setup.