Re: Cat Converter air tube question Caprice

>I suppose the new muffler could be more back pressure than the pevious >like you guess. Now consider that low revs don't generate as much >pressure out the exhaust. If you comine higher revs and the new >muffler, it might explain why get the sound at higher revs but at low >revs nothing sounds different than before. Takes both factors >combined maybe. > >Then again... >

It was the air tube. I clamped some aluminum foil over the end of the open tube to seal it, and the noise is gone !

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Lecher9000
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