Manthey-Racing upgrade shaves 4s from 2022 Porsche 911 GT3’s ‘Ring time

Manthey-Racing has developed a new performance upgrade package for the 992-generation Porsche 911 GT3, and you’ll be able to purchase it directly from Porsche, meaning it won’t void the manufacturer’s warranty. The 992-generation 911 GT3 already offers plenty of performance straight from the box, but Manthey’s kit, known as the Manthey…