J's Racing Tsuchinoko Intake

Car is back and has some pretty savage acceleration for a 2 litre NA car. However before I go on about this I realised I had skipped over some fairly indepth descriptions on my breathing mods.

To get the ball rolling I'll start with the J's Tsuchinoko intake.

The goal of an air intake is to draw in as much air as possible for the engine. This can be achieved by increasing the air flow to an intake and also increasing the air mass i.e. Air pressure (within a contained space). Therefore it stands to reason that if you have a high flow rate and volume of air, your intake will be good.

The J's intake consists of an airbox, carbon fibre air duct (which doubles as the airbox cover), air intake scoop and a high flow air filter.


J's Racing Tsuchinoko Air Intake System

The intake scoop sits behind the right side of the front grill.
On a moving car this is an area of high pressure; demonstrated in the below diagram.


Areas of high and low air pressure on a moving car

 

Air intake scoop

The air is channeled through the carbon fibre duct using the ram effect and is held within the air box containing the air filter. It is within this box that air is collected and thus its pressure increased. As such, the design meets the two objectives mentioned earlier of high air flow and high air mass. One additional point to note is the enclosed air box helps keep the air cool. Cold air = high pressure air as it is denser than warm air.

The J's design of implementing this method has resulted in the highest efficiency rating and inflow volume in the market (for an off the shelf product). It is also worth noting that prior to the R&D of creating this intake, they were using the GruppeM, commonly known as one of the most efficient intakes for the DC5.