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The 88 inch motor on my 06 Ultra blew and was replaced with a 95 inch Harley Reman motor under warranty ( I had 9 days left on the warranty when it blew)
Currently I have the old stock Y pipe and V&H slip ons on the bike. I'd like to go to a better exhaust system with O2 sensor plugs so I could upgrade my ECM. I have TTS but can't use Vtune because of the lack of O2 sensors.
What exhaust system would you guys recommend? The 95 inch motor is stock with the only mods being the AC and slip ons.
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