Our DDT x T1A Cold Air Intake was designed to draw a higher volume of cool air into the stock throttle bodies whilst eliminating air flow restrictions, resulting in improved throttle response and increased power and torque. With this intake installed, OEM bulky air filter boxes are replaced with our high flow filters and optionally wrapped (additional cost) tubing. This eliminates clutter within the engine bay whilst drawing cooler air from outside. A vast improvement over the stock intake system.
 
Power Gain & Identifying Intake Restrictions
The DDT x T1A intakes produce a realistic and repeatable increase in power of approximately 6-8kw (8-11hp) across a wide RPM range (3,300-7,100 rpm) on an already tuned car with 2.5 inch long tube intakes.
 
Manifold Absolute Pressure (MAP) can provide valuable information about the intake system's efficiency and potential restrictions. It’s common to see MAP values decrease as engine RPM or engine load increases, however this does indicate a potential air intake system restriction. This is because a restriction in the intake pipe, possibly due to a poorly designed intake system or inefficient path of air can cause a decrease in the pressure inside the intake manifold, resulting in lower MAP readings. Ultimately, sustaining as high as possible MAP values throughout the RPM range indicates minimal restriction on the intake side and an environment to produce more power. The larger inner diameter of these intakes, coupled with their smooth flow characteristics consistently augment MAP readings compared with aftermarket 2.5 inch intake systems.
 
Intake Design
A common complaint and design limitation with many aluminium intakes on the market is the uneven surface within the inlet tract. This is usually caused by pipes not being aligned correctly prior to welding, or welds bleeding through and creating ridges on the inside of the pipe. This leads to air separating off the pipe wall creating turbulent, rather than laminar flow. The DDT x T1A intakes use a flow optimised design with the fewest bends possible and smooth transitions within the pipe, whilst still ensuring fitment with right hand drive (RHD) vehicles. This achieves minimal air turbulence and pressure differentials within the inlet tract. A primary aim of the intake design was to create a pair of intakes with dimensionally mirrored piping between the left and right banks. From a tuning perspective this has produced a smoother MAF scaling, more accurate load calculation and OEM+ drivability, even when compared with current aftermarket 2.5 inch intakes.
 
The air filter placement with long-tube intakes on a 370z (90 degree angle, in front of the radiator support) makes a direct air path almost impossible. To overcome this, a velocity stack has been integrated into the piping (where the air filter attaches) in front of the radiator support to smooth airflow entering the inlet tract. The air filter/velocity stack combination was chosen to allow for the largest venturi effect possible without requiring cutting into the front aluminium crash bar.
 
Easy Installation & Maintenance
We specifically designed this intake for a hassle-free installation. With ours, you can expect an easy install with minimal cutting or trimming. It can be installed with basic hand tools in around 30-45 minutes! Couple that with a purpose built, reusable pod filter, you’ll no longer have to purchase filters down the road. Just one more reason why our intake is the best option on the market.
 
Exclusive Benefits
+6-8kw (8-11hp) gain across a wide RPM range
Flow optimised design with mirrored pipe dimensions between left and right banks
Integrated velocity stack
Retention of the OEM PCV system
 
Disclaimer
Tuning is required to run these intakes due to the larger pipe diameter.
Trimming of the radiator support is needed for clearance of these intakes.
 
Vehicle Fitment:
2009-2021 Nissan 370z