The goal with any performance header design is to get exhaust gases to flow out of the engine faster and more efficiently, which in turn will produce more power and performance. The K-Tuned 4-2-1 Race Manifold does this.
Designed with extremely smooth slip fit merge transitions to increase the exhaust flow and power output of the Honda K engine.
Fitment is equally if not more important to K-Tuned than function and although the subframe and sway bar on the EP3 presented some design challenges, the final fitment was definitely worth some extra time.
The secondary tubing passes perfectly through this tight area with extra clearance for engine movement.
The header features stepped piping beginning with 44mm primaries that progressively move into 48mm, then 50mm secondaries and finally a 64mm/2.5" exit.
Like all K-Tuned headers, it is assembled with mandrel bent, 304 stainless steel tubing and is fully tig welded.
K-Tuned also use a slightly thicker gauge tubing that allows for better weld penetration and additional strength.
The cnc cut 3/8" thick flanges are also double welded and then ported for optimum flow at entry and exit.
Directly replaces the oem 2 piece design and eliminates the catalytic converter, a short 2.5" pipe is put in place with defouler for the secondary O2 sensor.
note: image is for illustration purposes and may differ on delivery