Can you explain that test a little more Lee? From the description it appears that you also increased the front head pipe size to 3 inch when you swapped to the race pro muffler?
I have only one car here left that I have flowmaster mufflers on. I run the Super 40's on my chevelle, don't even think they are made anymore.
Yes they are loud, it does sound good, some drone, but I don't drive the car regularly, I only bring it out when I'm in the mood for noise. The car goes mid 11's at 118 mph with them through a complete 3" system with tails. So they either aren't as bad as portrayed or I'm leaving a bunch of power on the table, lol.
Most of our cars here I prefer things a little quieter though, and at some point I may swap out the 40's for a pair of Dynomax ultra flows, not looking for a performance gain, just may want to tame the noise down a bit.
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