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Description
do88 Porsche 911 Turbo (991) Intercooler Kit MERA for do88 Y-PipeA true performance upgrade intercooler for the 991 Turbo Turbo S. This is the most refined of all products we carry today, MERA launched in January 2022! Colder inlet air temperature in the same conditions: 40C 104 F (57C 134,6 F), 17C 30,6 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: 726 CFM (607 CFM), 19 % higher (do88 intercoolers + OE y pipe vs OE
A true performance upgrade intercooler for the 991 Turbo / Turbo S. This is the most refined of all products we carry today, MERA launched in January 2022!- Colder inlet air temperature in the same conditions: 40°C/ 104 F (57°C/134,6 F), 17°C/ 30,6 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: 726 CFM (607 CFM), 19 % higher (do88 intercoolers + OE y-pipe vs OE intercooler + OE y-pipe)! See diagram below.
- 3D, freeform designed cast end tanks.
- Custom designed carbon fiber ambient air guides.
- Comes with high quality silicone hoses and accessories for installation.
MERA as in more, means more cooling, better airflow, more performance. Simply, MERA!
Starting off with a thorough market research in the beginning of our intercooler development for the 991, we understood that not many of the upgrade products on the market were really upgrades, but rather at the same level as the 991 standard units, or in some cases even subpar. We realized that we could not cut any corners to keep the cost down, we had to create the best possible solution for the given space in the car!
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 the 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.
Overall differences:
- 13% higher airflow compared to the previous version.
- New, lighter airduct made from real prepreg carbon.
- 3,1 kg weight increase per intercooler compared to 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 3,1 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!
The intercooler kit comes with hoses adapted for OEM or do88 (63 mm) y-pipe. What differs is the included hoses. Choose your version in the drop-list above.
When it comes down to performance, the do88 intercoolers 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 of 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 hoses on both inlet and outlet, for both the OEM 991 intercoolers, and the do88 performance intercoolers. What you see is what you get MERA performance from do88!
Fits:
Porsche 911 (991)
Model years: 2013-
Engine: Turbo / Turbo S
Note:
Select which Y-Pipe you have on your car. OEM or do88 Performance.
OEM reference:
99111063972
99111063973
99111064072
99111064073
Note! Some modifications has to be done when installing this intercooler kit, please read step 29,31 & 35 in the installation guide before placing order (click the link below).
Detta diagram visar luftflöde vid olika tryckfall för do88 prestanda intercooler jämfört med original intercooler:
Detta diagram visar insugstemperatur för do88 prestanda intercooler jämfört med original intercooler:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
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★★★★★ 5
You will read this book late into the night or savor it for the next Day. :)
Format: Hardcover
What an amazing writer! Such clear and concise unfolding of events entwined with Biblical signs and Prophecy. Incredibly well researched and a joy to read. This book is a joy to read and while I'm trying to savor it, I can tell I will be reading this all night and rereading again. I want to gift this to my sister because I'm so impressed but I also want it in my collection. I will probably buy this book again for this reason. Exceptionally easy to focus and surrender to what God wants to impart in this book. Thank you for your clarity and love with this book.
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Reviewed in the United States on June 2, 2025
★★★★★ 5
Knowledge is Power
Format: Paperback
Wonderful. NOW FAITH IS UNDERSTANDING THE SIGNS PRESENTED.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Revelation Bible Study
Format: Kindle
I have completed a one year bible study on Revelation in our church, then David Jeremiah came out with his book Signs. It is absolutely FABULOUS! He is such a great writer, he explains from scripture and interprets exactly what John the Apostle is seeing and puts it to print! This was a great back up to my bible study and a resource that I will use forever. Prophecy is so important and we all have questions about where we go when we die, what is happening to our world as we have known it. David Jeremiah answers all of this and more. I am not confused anymore! I now can talk about eternity to others who may wonder why they need to know the things in this book. Once you have read "Signs" you will want to tell everyone so they don't spend eternity in that dark, dark, fiery place. Everyone needs to recognize Jesus as King. If you miss out now there will be NO TURNING BACK! I'm not a fanatic but I would hate to see anyone spend eternity in that situation. God is a God of second chances. His love is real for everyone. You need to know why you need to accept Jesus as Savior now so you won't have to endure the things that are coming. And it could be here at any moment. David Jeremiah tells you why you need to be ready!
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Reviewed in the United States on June 18, 2019
★★★★★ 5
An absolutely important read.
Format: Paperback
I bought this book on a recommendation. I loved it. It is easy to read, explains itself well, and is very informative. It always gives scripture to back it up. I have read the Bible and continue to do so, but this book explains a lot of things and also refers to actual history to and current events. It was written in 1999, but proves itself to be very important in the year we live in today. I recommend this book to anyone who is a Christian, wants to be a Christian, or even people who don't know what they believe. The author of this book has made me a fan of his writings. If you decide to read this book, you won't regret it.
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Reviewed in the United States on June 7, 2024
★★★★★ 4
Important read but a little difficult to understand
Format: Hardcover
The beginning is a well written history on the background of what is happening in Revelations, how and why Revalations came about, and what will occur in the ends times. Lots of prophecy, (which I love to read about) but I am finding it difficult to understand. I am a fast reader, so maybe for someone else, who reads slowly and with intention, they may understand it better. I guess I was hoping for a little easier read and right to the point. This could be my problem and not the book! David Jeremiah is a wonderful pastor and his teachings are always relatable and easy to understand so as I write this, I think it's the reader's problem, not the writer :)
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Reviewed in the United States on August 27, 2024
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