We have wrapped up the testing and either vibrant tones down the exhaust considerably. We tested these with 2JR 3" with a stock DP, 2JR catted DP and Race DP. What we also found is the exhaust is louder with the stock DP over the 2JR DPs - only in the 3-4K rpm point.
We have two new ones available to ship tomorrow (making them today) if anyone is interested in changing over. Just call Kate and she will get you setup.
Thx!