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The Rog Journal

Compatibility, real gains, sound: what you need to know before choosing.

  1. 6 min Why you cannot hear your engine: the truth about your exhaustIntroduction If you are a car enthusiast, you know how much your engine's sound matters to the pleasure of driving. Yet many owners end up disappointed...
  2. 5 min Stainless vs titanium sports exhaust: sound, performance & weightWhen you set out to improve a car's performance and sound, one of the essential choices is the exhaust material. Among the most prized are stainless...
  3. 6 min Why fit a decat system? Benefits, drawbacks and the rulesIntroduction For a great many car enthusiasts, driving goes far beyond the numbers the manufacturer quotes. The real pleasure lies in what you feel behind the...
  4. 6 min Decatting your car: legal or not? What are the risks?Introduction Modifying the exhaust system is one of the first steps people consider when they want to unlock their engine's potential. And among those modifications, removing...
  5. 9 min How to pass vehicle inspection with a modified exhaustIn brief. A modified exhaust stands a good chance at vehicle inspection if it keeps a catalytic converter (the original or a 200-cell sports cat), the...
  6. 8 min Pop & Bang: how it works, and is it risky?In brief. Pops and bangs are the cracks and crackles that come from the exhaust when you lift off the throttle. They are created by the...
  7. 6 min How exhaust gases influence the engine mapIntroduction When people talk about engine tuning , they usually think of remaps, horsepower and torque curves. But there is one component, often neglected or misunderstood,...
  8. 7 min Full system, mid-pipe, decat pipe, sports cat… what to change for which result?Introduction Want to improve your car's performance, sound or looks? A sports exhaust is often the first modification people consider… but where do you start? Do...
  9. 7 min Remote-controlled valved exhausts: how they work and why they change everythingIntroduction You love the sound of an uncorked engine, but you do not want to wake the whole street every time you start up? You drive...