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With KW factory pre-set dampening
*Largest gains are measured as the largest gain at any single point between the two plots
it allows the engine to be more efficient while also enabling it to make more power
The non-alkaline
Invidia N1 Cat Back Exhaust Subaru Sedan WRX 2008-2013 HB557F.545 With KW factory pre-set dampeningFor a good balance of price and performance, Invidia offers the motorsports enthusiasts a strong line up of Invidia N1 Exhausts that are constructed with high quality SUS304 stainless steel, CNC machined flanges, and manufactured with a polished finish. Each system features mandrel bent stainless steel piping for maximum exhaust flow and reduced back pressure. These exhausts are engineered to produce strong mid to top end power gains, as well as an