TwinTurbo.NET: Nissan 300ZX forum - Install resonators and Cats. Also could try Whisper Mat
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Subject Install resonators and Cats. Also could try Whisper Mat
     
Posted by doug8867 on April 20, 2005 at 1:05 PM
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In Reply To Help!!!! what will quiet a loud exhaust? posted by wingz on April 20, 2005 at 12:20 PM
     
Message or QuietCar sound deadening material. I've used the Whisper Mat and it is somewhat effective at certain rpms. QuietCar is billed as even better and is applied with a brush or spray can, however I've never used it.

Both methods will require a bit of your time to install. Cats and/or the resonator will cause the most reduction in sound (a little horsepower too ;)), but with a 2.75" system you're still going to have some noise. Add the cats first - it's make your car legal for street driving - and then see how it sounds. If still too loud, add the resonator, then the sound deadening. Good luck.

     
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