Which muffler makes the most power??
Flow charts for the Dynomax Ultra Flow and other popular brands:
http://www.a-1performance.com/flow.htm
Other muffler flow data:
https://ls1tech.com/forums/generation-iii-external-engine/113572-interesting-review-about-15-mufflers.html
I suppose my Magnaflow catback is right in the middle somewhere ahead of Flowmaster but behind the leading mufflers. I am really curious as to the flow rates of the CORSA and GMMG mufflers.....can't find anything on them.
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