Reply To: Poor, I mean really poor MPG/Fuel Economy

[Noe]

Sounds like you went from extreme lean to possibly rich or extreme rich if mileage has been dropping drastically. With that style tuner, putting it on a dyno and monitoring AFR while making changes can help get it closer to optimal levels. I understand Maximus remote option is a bit pricey, but will be dialed in afterwards. Volumetric Efficiency is key.