| | | | The way we do it | The existing exhaust system is replaced with a custom built free-flow system. | The new system is routed the same as the original and is supported by the same hangers. | Visually the systems may look the same but the difference is in the diameter of the tubing and the construction of the silencers. | The new exhaust system allows the air to be scavenged from the engine more efficiently, without compromising the comfort of reduced noise levels inside the vehicle. | | | | Catalytic Converters | The fact being however that very little people actually understand the subject or even know how a "Cat" looks. | Over the past few years, catalytic converters have been a point of discussion in many workshops, group debates, arguments, etc. | Herewith some useful information. | The engine's exhaust emissions can be influenced at three points. |  | The first option is to adjust the mixture formation | | The second possibility is internal modifications in the engine itself (such as optimised combustion-chamber design) | | The third alternative is post-combustion exhaust-gas treatment downstream from the engine | | The chief priority on the engine's exhaust side is to complete combustion of the remaining unburned fuel. | This is the function of the catalytic converter. | The converter supports secondary combustion of CO and HC to form non-toxic carbon dioxide (CO2) and water (H2O) while simultaneously reducing the exhaust-gas-borne nitrous oxides (NOx) to neutral nitrogen (N). | Catalytic treatment is much more effective than processes such as purely thermal secondary combustion in which pollutants are burned out in a hot flame. | The catalytic converter assists in converting over 90% of the pollutants into harmless constituents. | The three-way catalytic converter reduces all three pollutants - CO, HC and NOx - at the same time. It features a tubular ceramic support surface with a noble metal coating that usually consists of platinum and rhodium. | The platinum and rhodium accelerate the chemical reduction of pollutants as the exhaust gas flows through the unit. | A blocked or destroyed catalytic converter will definitely reduce the power output and negatively influence fuel consumption. | If a catalytic converter is installed, it is essential that unleaded fuel be used, as lead destroys the catalytic properties of the noble metals. | The point is, leaded fuel and catalytic converters cannot work together. | SAC is producing a Product Information Brochure on leaded and unleaded fuel. It should be available soon. | | | |
Exhaust Pipes, Branches, Headers, Manifolds and Wildcat exhausts available for most petrol & diesel vehicles including Alfa, Audi, BMW, Chev, Chrysler, Colt, Ford, Honda, Hyundai, Isuzu, Jeep, Kia, Mazda, Mercedes, Mini, Nissan, Opel, Toyota, VolksWagen and more... |
