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Grimlock · 05-22-2013, 01:48 PM

I've detected the slightest bit of resonance/drone on my non-resonated cat back at 4200-4300 RPMs. It's nothing I'm upset about because I actually have to listen for it to hear it, but it's there.

05-22-2013, 01:48 PM	#232
Grimlock Senior Member Join Date: Dec 2011 Drives: BRZ and NA Location: Annapolis, MD Posts: 878 Thanks: 46 Thanked 270 Times in 167 Posts Mentioned: 11 Post(s) Tagged: 2 Thread(s)	I've detected the slightest bit of resonance/drone on my non-resonated cat back at 4200-4300 RPMs. It's nothing I'm upset about because I actually have to listen for it to hear it, but it's there.