I did the CBE and HFC at the same time but the sound is great. I like the hiss, pop and gurgle the car gained. Adds personality. Dunno about you guys but my '12 started throwing codes until I added a set of O2 restrictor tubes to the HFCs.
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'12 Blk Rose 6MT Sport Nav - Stillen Gen2 intakes - Stillen HFCs and Cat Back Exhaust - H&R 15/20mm spacers - Koni Shocks - Swift Springs
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