Community Q&A Question: Volume increase/size difference

Asking About: Mustang Flowmaster 2.5" Mini-Catalytic Converters - Ceramic - 223 Series (79-04) 5.0/4.6


Volume increase/size difference

How does the sound of these compare to stock cats? I want to make my car louder while being legal in VA and do I need a tune to run these? Also whats the difference between these and the 3 inch outlet ones?
from McLean |
0 0

These will allow more volume over factory cats as they flow much more efficiently. As for a tune being required, if used on an 05+ Mustang, a custom tune is recommended. The factory piping was 2.5 inches in diameter and if you are putting these on your factory mid pipe, these will be easier to install.
from Hewitt | Staff Member Post!

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