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I know with Supertrapp mufflers you tune the rear cyl. pipe for TQ and the front for HP,this is for touring models with the factory style headers.
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2009 ULTRA WHITE, GOLD PEARL/PEWTER PEARL,TTS TUNER,ANDREWS 21H Cam,Ventilator AF,V&H POWER DUALS,110 CVO MUFFS,"CRASH BAR" OIL COOLER,TUNED BY JD'S CYCLE WORKS
AMSOIL DEALER SINCE 1985
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