OEM Upgraded Exhaust and Air Intake
To keep warranty and give my 2011 Touring (E91) a bit of a boost I was thinking about the OEM versions of these upgrades.
Question, anyone have experience with both on a non turbo (328iX) and second will there be a side benefit of increased gas milage if I keep my foot out of it or do I just get to grin a lot?
F10 - '12 535i XDrive - Premium/Cold/Tech Packages - Dark Graphite II / Black Dakota
E89 - '09 Z4 3.0Si Roadster - Crimson Red/Sport Automatic
E91 - '11 328i XDrive-Touring (sold)
E46 - '04 325Ci-Dinan3 (sold) - Oxford Green with a lot of AC Schnitzer too.