Blog/FAQ

The 2021+ Mustang ECU Lock: Why You Can't Just ...

Own a 2021+ Mustang and want to tune it? Stop! Your ECU is likely encrypted. Our Tuning Guide explains the "2021 Lock," how to get around it, and why a...

Dry vs. Oiled: Which Drop-In Air Filter is Best...

Still buying throw-away paper air filters for your Mustang? It might be time to upgrade. Our Air Filter Guide compares "Oiled" vs. "Dry" performance filters and explains why a simple...

50-State Legal Horsepower: The Best CARB-Compli...

Ready to upgrade your Mustang's intake but scared of failing emissions or buying the wrong part? Installing the wrong MAF housing can make your car un-drivable. Our latest Engine Guide...

Euro vs. Smoked: Why AlphaRex Tail Lights Domin...

Tired of your Mustang looking like every other S550 on the road? The "Euro Tail Light" swap is the easiest way to change your car's personality. Our latest Lighting Guide...

The S550 Power Guide: Intakes, Catch Cans, and ...

Confused about "Tune Required" intakes or why your Mustang needs a Catch Can? You aren't alone. Our massive S550 Engine Guide explains the critical difference in MAF sizing, how to...

The S550 "RTR" Look: How to Install Premium Gri...

Want to give your Mustang that aggressive, glowing front end? Upgraded Grille Lights are the most popular aesthetic mod for the S550. Our latest Lighting Guide explains the installation process,...