If a SRI and F2Werks street exhaust, it retains both cats I think, are added does the car need a tune? High fuel mileage and driveability are the primary needs for this daily driver. Thanks
Just found the ECU Tuning section. Apologies if this should be there.

Moved to "ECU Tuning Chat"

No you should be just fine with those mods. A tune wont add much performane with those mods and the duratec engine.