Aston Martin V12 Vantage XperTune Performance Software 1981 We use HJS catalysts to

We use HJS catalysts to ensure durability and longevity for the life of the product while eliminating and chance of a check engine light

and improved pad wear

Front - BMW-3 Series-E90/91 sedan/wagon

There is not a significant sound advantage to using these Side Mufflers alone in conjunction with the factory non-PSE center muffler

Aston Martin V12 Vantage XperTune Performance Software 1981 We use HJS catalysts toFor 2009+ Vantage V12 models Achieve maximum power without sacrificing drivability or reliability by optimizing the engine's air fuel ratios, timing, and more. We set out to extract maximum possible gains out of the V12 Vantage while keeping the operating parameters safely within the confines of reliability and longevity. Once we receive your ECU, our tuner bench flashes it with the upgraded ECU map and we return it to you for easy re installation; no