I think it would all depend on how long you stay at driving speed for. It would be interesting to see proper graphs of all this to find the sweet spots.
2000 Mustang V6 Automatic
- SCT Tuner; CAI; Single Flow 40s; T-Lok;
- Smoked Xenon Headlights; Spoiler Delete; Shorty Antennae, 10" Sub & Clarion Deck; Courtesy Lighting;