Originally Posted by AZfocus2012
But would that not manifest itself as an increased MPG, and if not, then why not. It sure seems to have in my Focus.
White Platinum Tricoat Metallic
2012 Ford Focus Titanium
Handling Package Nitto Motivo's
Borla Exhaust with UltraQuiet resonator
K&N X-4870. Steeda RSB