Jason, do you know the EFFECTIVE displacement of my motor? It'* more than 5 liters. The numbers I posted would be even MORE In favor of the Magnaflow if it were calculated for my effective displacement.
For hp, Magnaflow beats Flowmaster.
For tq, Magnaflow beats Flowmaster.
For flow, Magnaflow beats Flowmaster.
For sound level (db) Magnaflow beats Flowmaster at WOT, equal at idle.
4 out of 4. Do you want performance, or do you want sound? Again, that'* the ultimate question. If you want sound, buy a fart cannon. If you want Performance, and your choices are Magnaflow, Flowmaster, and Dynomax, buy Magnaflow.
If you want something in between, flip a coin.