Infinity Design - Honda Civic Type R FL5 Intake
Design
The latest Honda Civic Type-R FL5 is a highly potent sports car which is a huge amount of fun to drive with a formidable 335hp and 310 lb.ft torque.
However, it does lack something and this is evident from just hearing the engine under normal driving, taking a closer look at the engine bay and most importantly datalogging the intake temperatures.
The OEM intake has a convoluted air path and small opening for air. We took a radical approach to the design using a large expanding tube with integrated MAF housing feeding into a completely redesigned airbox with significantly larger volume and a 80% enlarged opening.
Our signature double cone large surface area air filter is used with it's 175mm opening. This is housed in the air filter housing and the system is clamped together.
Intake temperatures are lowered and remain lower more consistently which in turn allows the engine to not just improve it's power output but remain more powerful under hard driving.
In addition to the intake system we have also developed a stand alone turbo inlet tube which increases volume and has a smoother radius into the turbo reducing turbulence.
DEVELOPMENT PROCESS
During the development process we created multiple prototypes and models.
The OEM system has a small opening and uses a standard panel filter with a small cross sectional area with a simple tube.
We decided to create a system which followed the same path but with significantly enalrged air opening, add our signature large venturi tube mating to a vastly larger volume airbox.Doubling the cross sectional area of the front inlet feed giving more a more than adequate increase on available air
After some iterations this method gave the best air flow under CFD analysis showing less turbulence than the OEM system with vastly increased airflow.
The results on both the dyno (see below) and road driving were excellent. Vastly improved throttle response, low end torque response improvementsUnder normal but spirited driving the engine feels even more eager to accelerate at every rpm wether under partial load or full load.
High Flow Air Filters & Intake Temperatures
Our bespoke short stack high surface area filter larger than any cone filter design currently on offer on the market with a huge opening of 170mm (6 3/4") and is designed to take full advantage of the intake tubes by altering the direction of the airflow towards the outer walls. By placing the air filters in front of the inlet tube we achieve the largest velocity stack
What is in the Box
1 x Venturi Inlet Tube
1 x Air Filter Housing / Inlet Ducts
1 x Bespoke Infinity Design Air Filter
1 x Black metal clamps
1 x Silicone Joiner with Clamps