Three Ways to Make More Power Every turbocharged performance car has untapped power from the factory. Manufacturers leave margin in the calibration for fuel quality variation, altitude, ambient temperature, and warranty liability. The question is not whether your car can make more power — it is how you want to unlock it. There are three fundamentally different approaches to engine tuning, and each one trades off power, cost, reversibility, and risk differently. Understanding the differences before you spend money will save you from choosing the wrong path. 1. Piggyback Tuning Modules How It Works A piggyback module is a small...

The Short Answer ECU tuning does not automatically void your entire warranty. But it can — and often does — give the dealer grounds to deny a specific claim if they can link the modification to the failure. The real question is not whether tuning voids your warranty. It is whether you can prove the tune did not cause the problem. What the Law Actually Says: Magnuson-Moss Warranty Act In the United States, the Magnuson-Moss Warranty Act (15 U.S.C. §§ 2301–2312) protects consumers from blanket warranty denials. The law is clear on one point: a manufacturer cannot void your entire...