Audi A8 This full sized Audi A8 sedan offers interior luxury and spaciousness comparable to any car in the full sized luxury sedan class

Proud Owner of '03 A8L

Old 08-24-2006, 11:27 AM
Thread Starter
Join Date: Aug 2006
Posts: 1
Default Proud Owner of '03 A8L

I currently own a silver A8L originally optioned with factory S8 wheels.

I am alwys interested in increasing HP without risking reliability or violating warranty/extended warranty rules. Can anyone suggest improvements to intake and exhaust which would fit my needs? Is there a higher flow air filter or cold air system available for the A8 or specific to the 4.2 motor? Is there an aftermarket exhaust system or muffler(s) which are applicable? I am not interested in big mouth style single outlet mufflers as worn by many modified Japanese imports. I also am not looking for obnoxious sound. In the past I have elimianted rear mufflers or resonators with positive effect. Given the muffling accomplished by cats and mufflers under the drivers compartment this has produced a less restrictive exhaust system with a pleasant increase in sound. Does anyone know if this solution would be applicable to my A8L?

I apologize for all of the questions. However, my search of the net has not yielded any answers.


Scott B
Old 09-26-2006, 01:41 PM
1st Gear
Join Date: Jun 2006
Posts: 396
Default RE: Proud Owner of '03 A8L

I dont think you can boost HP without violating you warranty. I have the same car with the same problem.
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