Quote:
Originally Posted by pbonsalb
I have read of increased resonance in the 1700-1800 rpm range with aftermarket exhausts. In efficient mode, gentle cruising on the highway, I can hear a little more sound right around 1700-1800 with my aftermarket titanium exhaust. It is barely noticeable to me. It may be that is a natural rpm point to get some increase in resonance. It may also be that an H or an X crossover helps and the location of the crossover may also be a factor. My exhaust has an X located about halfway. A couple of aftermarket exhausts have bigger mufflers than others, like the FI and Armytrix.
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My previous setup was a secondary downpipe and an x-pipe near the end of the exhaust, which had a solid drone. I still had the stock resonaters and mufflers for that setup, and I noticed that the drone got worse after changing the catback. I am just getting used to it now, but I am still looking into solutions for this issue,