BigPack Porsche 911 Turbo (991.1) 2013-15 with inlets

The complete charge air cooling solution for Porsche 911 9911 Turbo / S
This kit comes in at a package price and includes our motorsport grade intercooler and high flow ypipe with all hoses and accessories for installation To even further enable a better breathing engine our normsetting inlet ducts can be purchased alongside these products

The intercooler kit MERA and the ypipe 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 37C/986 F 55C/131 F 18C/324 F lower See diagram below
More air to your engine less backpressure and better airflow Airflow at 0175 bar / 254 psi pressure drop 835 CFM 607 CFM 37 higher See diagram below
Topquality highdensity motorsportgrade BarampPlate cores from Garrett
3D freeform designed cast end tanks
Custom designed carbon fiber ambient air guides
Ypipe made of 25" 63mm mandrel bent aluminum pipes
Ypipe made from a cast smooth flowing collector part
Ypipe 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 Tubeampfin 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 its time for the next phase in the constant development of do88 products After thorough testing we chose to move over to a BarampPlate motorsportgrade 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
• 31 kg weight increase per intercooler compared to the 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 the airflow over the full core in a very precise way This is very important as a good tank design will be beneficial for both pressure drop and cooling efficiency To be able to fit an intercooler with appropriate thickness for the job it was also necessary to design a new upper ambient air guide This was designed in our 3Dscanned environment to ensure perfect fitment to the vehicleintegrated air guides as well as the intercooler To further remove bottlenecks the intercooler connections are 70 mm 2 3/4 inch to really allow for the air to pass without restriction This also means that there are new hoses included for each position of which all are 3Ddesigned with maximum airflow in mind All hoses are CFDtested to ensure this The hoses on the turbo outlet are made from a hightemp spec material rated to 240C 464F continuous temperature In order to really take advantage of all the heattransferring ambient air the carbon ducts come with proper seals towards the body forcing all of the air to pass through the core and not escape around it

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 its an allaluminum dense construction Our intercooler weight is 85 kg 1874 lbs per piece and the 991 OEM intercooler weighs 310 kg 683 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 Ypipe
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 Ypipe and here isthe 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 CNCmachined connections for bov and breather hoses
This construction adds a lot of performance but only a tad of extra weight

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 50250 km/h 30155 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 17C 306 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 inhouse Superflow SF1020 Probench the airflow is verified as a complete system with both intercoolers hoses and ypipe for both the do88 bigpack and the OEM 991 units What you see is what you get Ð true performance

Fits
Porsche 911 9911
Model years 20132015
Engine Turbo / Turbo S

Note
Select if you like to add our high flow turbo inlet hoses to your BigPack

OEM reference
99111063972
99111063973
99111064072
99111064073
99111005070
99111064672
99711064773

NoteSome modifications has to be done when installing this intercooler kit please read step 2931 amp 35 in the installation guide before placing order click the link below

This diagram shows the air flow at different pressure drops of do88 BigPack compared to the OEM intercoolers and Ypipe


This diagram shows intake air temperature of do88 intercooler compared to the OEM