DO88 PORSCHE 991.2 BIG PACK KIT & INLETS
BIG-200-GEN2-179
The intercooler kit MERA and the y-pipe and inlets are great products on their own. Used together they generate a great inlet temperature reduction, less backpressure throughout the whole system and thereby allowing more power.
- Colder inlet air temperature in the same conditions: 37°C/98,6 F (55°C/131 F), 18°C/32,4 F lower. See diagram below.
- More air to your engine, less backpressure and better airflow! Airflow at 0,175 bar / 2,54 psi pressure drop: 835 CFM (607 CFM), 37% higher! See diagram below.
- Top-quality, high-density motorsport-grade, Bar&Plate cores from Garrett.
- 3D freeform designed cast end tanks.
- Custom designed carbon fiber ambient air guides.
- Y-pipe made of 2,5" (63mm) mandrel bent aluminum pipes.
- Y-pipe made from a cast, smooth flowing collector part.
- Y-pipe has two methanol injection connections (1/8 -27 NPT). The pipe is delivered with blanking plugs in these connections.
- Comes with high quality silicone hoses and accessories for installation.
About the intercoolers:
MERA as in more, means more cooling, better airflow, more performance. Simply, MERA!
Upon launching this intercooler kit back in 2018, we chose to go with a UK made Tube&fin core, enabling great cooling and airflow paired with a low weight. It has proved 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 constant development of do88 products. After thorough testing, we chose to move over to a Bar&Plate, motorsport-grade core from Garrett, thus bringing this already highly effective upgrade to the next level.
Differences to our previous version:
- 13% higher airflow compared to our previous version.
- New, lighter airduct made from real prepreg carbon.
- 3,1 kg weight increase per intercooler compared to the previous do88 intercoolers.
All in all, the weight increase compared to the OEM units is relatively small considering the sheer size of the intercoolers, and the fact that it´s an all-aluminum, dense construction. Our intercooler weight is 8,5 kg (18,74 lbs) per piece and the 991 OEM intercooler weighs 3,10 kg (6,83 lb) per piece. As much as it may seem in terms of weight increase, it is more than well compensated for if we consider the performance gain these intercoolers provide!
About the Y-pipe:
In the beginning of the development process of this product we spent a lot of time thinking what would be the preferred way to build a Y-pipe and here is the result of our conclusions and development process! Our pipe have both a very good flow rate and a low weight which is accommodated by composing mandrel bent lightweight pipes with a high quality 3D freeform designed cast joint between them. Onto the cast part we then welded CNC-machined connections for bov and breather hoses.
This construction adds a lot of performance but only a tad of extra weight.
- Smooth flow transitions.
- Very smooth internal surface for best air flow.
- Excellent thermal properties, the hoses will not absorb heat from the engine.
- The hoses are reinforced with stainless steel wire to eliminate the risk of implosion on high power installs
It was a real challenge developing new turbo intake hoses for the 991 Turbo. The lack of space made it really difficult to make a set of hoses that would outflow the stock plastic pipes. We succeeded but in some smaller areas we had to compromise and letting the hose have no clearance, so they will push or rub in some non-sensitive areas.
Performance:
When it comes down to performance, the do88 bigpack significantly reduce the intake temperature! In the graph below the difference towards the OEM 991 units is presented. The data is collected with an AIM race logger under 5 consecutive runs in an immediate sequence. Full throttle accelerations between 50-250 km/h (30-155 mph) in a Stage 1 tuned Porsche 991. No cooldown in between, just full pull. During every test, the car was driven in Sport Plus, AC off.
The test was conducted in the following manner:
Firstly, 5 runs were made with the car equipped with OEM intercoolers. Stop, fast change of parts to the do88 intercoolers. Shakedown for a few minutes and then 5 runs made in the exact same way as with the OEM parts. The decrease in inlet air temperature is significant, peak delta is 17°C (30,6 F) see the graph below!
Cooling is important, and so is airflow. After many hours in the development, refining the end tanks and choosing a core to meet our demand, the result is an intercooler that is much more efficient in terms of heat transfer as well as airflow. Using our in-house Superflow SF-1020 Probench, the airflow is verified as a complete system with both intercoolers, hoses and y-pipe for both the do88 bigpack and the OEM 991 units. What you see is what you get – true performance!
Fits:
Porsche 911 (991.2)
Model years: 2015-
Engine: Turbo / Turbo S
Pairs well with
DO88 PORSCHE 991.2 BIG PACK KIT & INLETS
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Mk5 R32 Turbo. I have had the best experience top quality service I would not think about going anywhere else! From helping me install my ecu over the phone with help on wiring sensors troubleshooting I would have been totally lost not to mention the remote mapping service so I was able to fit it in around work and other things the car runs like a dream pulls hard in all gears and is music to my ears. I will not take my cars anywhere else 5* Thank you for bringing my project to life
Something came up that required me to get a car part urgently and under a time limit and I was having trouble tracking down local businesses that could source it for me. Luckily, I came across Sameer’s contact information and reached out. He was brilliant - answered my query over the phone, got the part ordered as soon as was physically possible and kept me updated every step of the order and delivery process. He solved my issue with professionalism and expertise. Very happy with the service received.
Sam always does a quality job when it's comes to mapping my car. It has been with Sam multiple times for mapping, tweeking and problem solving and is very knowledgeable when it comes to ECU masters. The passion toward cars and mapping reflects in his work!
Absolutely great services. Great communication. Always ready to help. My car is now faster, more reliable, and made way more power. Sam is the man.
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