| There are many ways to modify an Audi S4. | | | | procedure. The smooth lines of the S4 Early cars |
| Now depending on your own individual | | | | pre "1999.5" as they are called use an early |
| preferences, you may wish to acquire an original | | | | version of the K03 turbo charger and were fitted |
| car or a car that has been modified. If you elect | | | | with less flexible intercooler hoses. Audi did put a |
| to go for the latter, depending on which country | | | | recall out for these vehicles to have the hoses |
| or state you live in, it may be mandatory to pay | | | | replaced under warranty, but not all dealerships |
| extra insurance premiums depending on the | | | | seem to do this voluntarily - you will need to ask |
| modifications rendered. These cars usually tend to | | | | them to perform the work if it's not already been |
| have issues that the main broker may be unable | | | | done when you take the car in for service. 2000 |
| or unwilling to help you with, and you'll want to | | | | model year cars seem to fare a lot better on the |
| note that Audi have lately revised their policies | | | | modification front. The hoses used are stronger |
| with regard to warrantable work on modified cars | | | | and the K03 turbos are evidently of a revised |
| in the USA and the UK with other countries | | | | design. |
| following suit, meaning that in the event of a | | | | Other popular modifications include lowering the |
| problem, you'll foot the bill. | | | | ride- height of the car to gain additional stability |
| The most popular modification to an S4 is "chip | | | | during cornering, short shifters, to lessen the |
| tuning" also known as "chipping" or "engine | | | | throw of the gear lever and to give a more |
| remapping". Such modifications allow the BHP and | | | | "solid" feel during changes, alloy wheel upgrades |
| torque of the car to be amplified radically. | | | | and various spoiler and grille options. With any sort |
| Prolonged use or continued hard driving of a | | | | of lowering, it's a good idea to have geometric |
| modified car can result in costly component failure. | | | | check done on the car to check camber and |
| The most common failures being leaking | | | | alignment, which can prove invaluable in the long |
| intercooler pipes which give way due to the | | | | run. The more radical of these cars can sport up |
| increased stress carried by them and failed turbos | | | | to 470BHP using parts from the later Audi RS4 |
| (usually the oil seals) requiring the engine to be | | | | and after some costly tuning work. |
| removed for replacement - a very costly | | | | |