The complete charge air cooling solution for Porsche 9971 Turbo / GT2
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 771 CFM 564 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 275" 70mm mandrel bent aluminum pipes
Ypipe made from a cast smooth flowing collector part
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 2016 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 fall of 2021 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
- 11C lower IAT compared to our previous version
- 19 higher airflow compared to our previous version
- New lighter airduct made from real prepreg carbon
- 3 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 845 kg 1810 lbs per piece and the 9972 OEM intercooler weighs 330 kg 727 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
Presented to you is the result of vast research many hours on the drawing board and numerous of 3D visualizations and 3D prints The do88 ypipe is the way to go for those bigger numbers when you want to get rid of all restrictions in the system accommodating very good airflow paired with low weight The ypipe is made from mandrel bent lightweight pipes with a highquality 3D freeform designed cast joint between them On the cast collector there are NCmachined connections for BOV and breather hoses
This construction adds a lot of performance but only a tad of extra weight The do88 performance ypipe weighs 152 kg 335 lb the OEM plastic pipe weighs 138 kg 304 lb and a competitor cast performance pipe comes in at 276kg 608 lb
As a finishing touch the ypipe is rounded up in a highquality powder coat that makes them look as good as they perform You can choose between the more discrete semigloss black and a fresh metallic silver finish
Performance
When it comes down to performance the do88 bigpack significantly reduce the intake temperature In the graph below the difference towards the OEM 9972 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 997 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 18C 324 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 997 units What you see is what you get Ð true performance
Fits
Porsche 911 9971
Model years 20072009
Engine Turbo / GT2
Note
Select which color you preffer on the Ypipe Black or silver grey
Select if you like to add our high flow turbo inlet hoses to your BigPack
OEMreference
99711063900
99711064000
99711063970
99711064070
99711064672
This diagram shows intake air temperature of do88 intercooler compared to the OEM
