Modifications
Tuned, Twisted, and Totally Unleashed: Inside the World of Independent Engine Builders Rewriting the Rules
Forget the dealership. The most exciting horsepower gains happening right now are coming out of small-batch shops, garage setups, and software wizards who refuse to accept what the factory handed them. We went deep into the tuning underground to find out how modern gearheads are squeezing every last pony out of engines never meant to go this far.