Originally Posted by TC@HP2
I seem to recall a conversation on here years ago about the capability of the Dynomax Ultraflows.

Video of comparison Flowmaster vs Dynomax at 700hp: https://www.youtube.com/watch?v=vPue52BBAaU

Various Dynomax offerings: https://www.youtube.com/watch?v=ORGyLVmFqmY


Flowmasters were consistently the WORST flowing "performance" mufflers we tested - always. (2 chamber, 3 chamber, & Deltas). The internal steel plates were walls, & did not promote high flow - they did just the opposite.

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