More than 32 years of continuous exhaust development and technical expertise are drawn upon to develop the ultimate Milltek Sport range of performance products, offering an ever-expanding comprehensive selection of performance exhausts which bu...
More than 32 years of continuous exhaust development and technical expertise are drawn upon to develop the ultimate Milltek Sport range of performance products, offering an ever-expanding comprehensive selection of performance exhausts which build on the successes of key marques likeAudi, Volkswagen, Porsche, BMW and Nissan.
This has placed Milltek Sport at the forefront of tuning companies and owners 'must have' list. Milltek Sport have appointed key distributors and are currently exporting to more than 80 countries around the world.
Milltek Sport exhausts are produced in high quality type-304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek systems are increased in bore to ensure ultimate performance without the loss of mid-range torque.
All Milltek exhausts are designed, developed and manufactured in-house in the UK.
A cat back exhaust system is a relatively simple power modification that will free up your exhaust gas flow and produce an engine note that is more pronounced than your stock muffler. The term cat back exhaust can be defined as the section of an exhaust system that attaches after the last catalytic converter in the system. A cat back exhaust is typically made up of a rear-pipe, a resonator and a muffler, but depending on the make and model, it can also include a mid-pipe, X-pipe, H-Pipe or a Y-Pipe.
Adding an aftermarket cat back exhaust can provide several benefits, the first of which is more power. Aftermarket exhaust systems are designed to be freer flowing than your stock exhaust, usually incorporating larger diameter piping and higher-grade mandrel bent tubing for a more laminar flow. These changes can result in a reduced level of back pressure at the engine manifold, which means the engine can breathe a little easier and release more horsepower and torque. How much horsepower is gained depends highly on the design of your factory exhaust system and the quality of the catalytic converters in front of it. If the stock catalytic converters are fairly restrictive, then less power can be gained from a cat back exhaust system. If the stock cat’s can flow a large amount of exhaust gas with creating too much restriction, then a cat back exhaust system should offer a nice increase in power.
An increase in fuel economy is often experienced after installing a cat back exhaust system. This is the result of the engine not have to work as hard pushing exhaust gases through the piping. This reduces the total amount of load on the engine, causing higher efficiency and MPG. This increase in fuel economy typically occurs when traveling at freeway speeds, but can sometimes be noticed when driving in the city as well.
Another big benefit of a cat back exhaust system is the sound they can produce. Whether you want just a little more grunt or a full-on growl, there is a cat back exhaust system out there that will satisfy your ears
Technically, the “downpipe” section of an exhaust system connects the headers or exhaust manifold to the catalytic converter(s). For most vehicles, the downpipe section is essentially incorporated with the catalytic converter section, and since there’s very little performance or fuel economy benefit to replacing a modern catalytic converter (they’re just not that restrictive), most vehicle downpipes are never given much thought.
However, on a vehicle equipped with a turbocharger, an after-market downpipe can offer a significant improvement in performance. Because a turbocharger is essentially a pump, it’s important for the pipes entering and exiting the turbo to have unrestricted airflow. On many turbocharged vehicles, the exhaust pipes coming in and out of the turbo contain numerous bends. If these pipes are bent using a cheap, crush bending process (a common situation for many vehicles), they can restrict exhaust gas flow in and/or out of the turbo.
By reducing exhaust gas restrictions, the turbocharger can spool up more quickly. Faster spool-up times mean more power and/or better fuel economy. As a result, many after-market exhaust manufacturers offer over-sized exhaust downpipes with mandrel bends.
Some downpipes come as a downpipe with decat whilst there is also the option of downpipe with Sports cat.
The Header-back (or header back) is the part of the exhaust system from the outlet of the header to the final vent to open air — everything from the header back. Header-back systems are generally produced as aftermarket performance systems for cars without turbochargers.
The Turbo-back (or turbo back) is the part of the exhaust system from the outlet of a turbocharger to the final vent to open air. Turbo-back systems are generally produced as aftermarket performance systems for cars with turbochargers. Some turbo-back (and header-back) systems replace stock catalytic converters with others having less flow restriction.
What is a Decat/ Sports Cat
A Decat/Sports Cat is a Removal of the secondary cat on an exhaust system , for both gains in power with being less restrictive than the standard cat releasing exhaust gases quicker and also extra noise.
A Decat isn't MOT Friendly as where as Cell 100/200 Sports cats can be , so please be advised to put standard cat back in for MOT time
Exhaust manifolds are generally simple cast iron or stainless steel units which collect engine exhaust from multiple cylinders and deliver it to the exhaust pipe. For many engines, after market high performance exhaust headers — also known as extractors — are available. These consist of individual exhaust headpipes for each cylinder, which then usually converge into one tube called a collector. Headers that do not have collectors are called zoomie headers, and are used exclusively on race cars.
The most common types of aftermarket headers are made of either ceramic, or stainless steel. Ceramic headers are lighter in weight than stainless steel, however, under extreme temperatures they can crack - something stainless steel is not prone to.
Another form of modification used is to insulate a standard or aftermarket manifold. This decreases the amount of heat given off into the engine bay, therefore reducing the intake manifold temperature. There a few types of thermal insulation but three are particularly common:
Ceramic paint is sprayed or brushed onto the manifold and then cured in an oven. These are usually thin, so have little insulatory properties however reduce engine bay heating by lessening the heat output via radiation.
A ceramic mixture is bonded to the manifold via thermal spraying to give a tough ceramic coating with very good thermal insulation. This is often used on performance production cars and track-only racers.
Exhaust wrap is wrapped completely around the manifold. Although this is cheap and fairly simple, it can lead to premature degradation of the manifold.
The goal of performance exhaust headers is mainly to decrease flow resistance (back pressure), and to increase the volumetric efficiency of an engine, resulting in a gain in power output. The processes occurring can be explained by the gas laws, specifically the ideal gas law and the combined gas law.