So you think I should run larger than 2.25 pipe all the way back from the manifold...? Or just back from the cat? im a bit confused now <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'> I plan on installing a ram air intake after xmas, then later upgrading it with a cold air extension... How much power do you think I will feel after installing just the performance muffler with 2 1/2 pipe from the cat ... and installing a injen ram air intake system? Because thats more than likely what i'll end up doing. Thanks for any help <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='

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-Ryan
93 SE Fastback