The complete charge air cooling solution for the Porsche 911 (991.1) Turbo/S!
This all-in-one kit includes our motorsport-quality intercooler and high-flow Y-pipe with all hoses and installation hardware. To further improve engine breathing, our standard intake ducts can be purchased with these products.
The MERA intercooler kit and Y-pipe are excellent products on their own. Used together, they significantly reduce inlet temperature, resulting in lower backpressure throughout the system, and thus increased power.
– Cooler inlet air temperature under the same conditions: 37°C/98.6°F (55°C/131°F), 18°C/32.4°F lower. See diagram below the product images.
– More air to the engine, lower backpressure, and improved airflow!
– Airflow at 0.175 bar/2.54 psi pressure drop: 835 CFM (607 CFM), 37% more! See diagram below product images.
– High-quality, high-density, motorsport-grade Garrett Bar & Plate cores.
– 3D freeform cast end tanks.
– Custom-designed carbon fiber ambient air guides.
– Y-pipe made from 2.5″ (63 mm) mandrel-bent aluminum tubing.
– Y-pipe made from a cast, slide-in manifold part.
– The Y-pipe has two methanol injection connections (1/8 – 27 NPT). The tube comes with blanking plugs for these connections.
– Comes with high-quality silicone hoses and installation hardware.
About Intercoolers:
MERA, as in more, means more cooling, better airflow, more performance. Simply put, MERA!
When we launched this intercooler kit in 2018, we chose to use a Tube & Fin core, which allows for excellent cooling and airflow combined with reduced weight. It has proven very well over the years, featured on various 1000 HP builds. In the spring of 2022, it’s time for the next phase in the ongoing development of do88 products. After extensive testing, we’ve chosen to switch to a Bar & Plate core, a premium Garrett Motorsport, taking this already highly effective upgrade to the next level.
Differences from our previous version:
13% higher airflow than our previous version.
New, lighter air duct made of real prepreg carbon.
3.1 kg increase in weight per intercooler compared to previous DO88 intercoolers.
The core is new, but the end tanks and all accessories are the same as before. The intercoolers feature cast end tanks that distribute airflow very precisely across the entire core. This is very important, as a good tank design will benefit both pressure drop and cooling efficiency. To fit an intercooler with the appropriate thickness for the job, a new upper ambient air guide also had to be designed. This was designed in our 3D scanned environment to ensure a perfect fit with the air guides integrated into the vehicle, as well as the intercooler. To further eliminate bottlenecks, the connections The intercooler ports are 70 mm (2 3/4 inches) to truly allow air to flow unrestricted. This also means new hoses are included for each location, all 3D-designed with maximum airflow in mind. All hoses are CFD-tested to ensure this. The turbo outlet hoses are made of a high-temperature material, rated for a continuous temperature of 240°C (464°F). To make the most of all the heat it transfers from the ambient air, the carbon ducts are fitted with appropriate seals to the body, forcing all the air to pass through the core and not leak around it.
All in all, the weight increase over the OEM units is relatively small considering the size of the intercoolers and the fact that they are a dense, all-aluminum construction. Our intercooler weighs 8.5 kg (18.74 lbs) each, and the OEM 991 intercooler weighs 3.10 kg (6.83 lbs). (pounds) per piece. While this may seem like a weight gain, it’s more than compensated for by the performance gains these intercoolers provide!
About the Y-Pipe:
At the beginning of the development process for this product, we spent a lot of time thinking about the best way to build a Y-Pipe, and here’s the result of our conclusions and development process! Our pipes have both excellent flow and low weight, which is achieved by assembling lightweight mandrel-bent tubing with a high-quality 3D-designed casting. We then welded CNC-machined connections for the vent hoses and BOV onto the casting.
This construction adds a lot of performance but only a hint of extra weight.
Performance:
When it comes to performance, the DO88 bigpack significantly reduces intake temperature! The graph below shows the difference compared to the OEM 991 units. Data is collected with an AIM race recorder over 5 consecutive runs in a single sequence. Full-throttle accelerations between 50-250 km/h (30-155 mph) in a Stage 1-tuned Porsche 991. No mid-engine cooling, just full traction. During each test, the car was driven in Sport Plus with the AC off.
The test was conducted as follows:
First, 5 runs were performed with the car equipped with the OEM intercooler. Stop, quickly swap the parts with the do88 intercoolers. Shakedown for a few minutes, and then 5 runs performed exactly the same way as with the OEM parts. The decrease in inlet air temperature is significant, with a peak delta of 17°C (30.6°F)!
Cooling is important, as is airflow. After many hours of development, refining the final tanks, and choosing a core to meet our requirements, the result is a much more efficient intercooler in terms of heat transfer and airflow. Using our in-house Superflow SF-1020 Probench, the airflow is verified as a complete system with both intercoolers, hoses, and The Y-pipe fits both the DO88 big pack and the OEM 991 units. What you see is what you get: real performance!
Porsche 911 (991.1)
Model Year: 2013-2015
Engine: Turbo / Turbo S