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Description
Fits 2016-2021 Bmw 230I/M240I High Performance Heat Exchanger-D780-0002The factory B4x B58 heat exchanger is not built to cater to the rigorous demands often associated with a modified build. The thin core is easily overwhelmed with IAT's rising dramatically once pushed beyond a few successive WOT pulls or even a few minutes at the track. This elevation in temperature gives way to the factory ECU fail safes pulling timing and reducing overall power in order to keep the system from overheating to the point of permanent
The factory B4x/B58 heat exchanger is not built to cater to the rigorous demands often associated with a modified build. The thin core is easily overwhelmed with IAT's rising dramatically once pushed beyond a few successive WOT pulls or even a few minutes at the track. This elevation in temperature gives way to the factory ECU fail safes pulling timing and reducing overall power in order to keep the system from overheating to the point of permanent damage. On an application where enjoyment is directly attributed to pushing the platform to its limits this constraint to cooling presents a challenge for the automotive enthusiast. The Dinan B4x/B58 heat exchanger for the F2x/F3x chassis assists in mitigating these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that wields 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks to be incorporated as well, which also contributes to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a 15° IAT delta recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment!
Features:
- Average of 8° reduction in IAT's with a maximum reduction of 15° over 15 successive WOT pulls
- Reduces the tendency to heat soak / go in to limp mode
- 48mm thick Dinan cooler vs. 27mm thick stock cooler
- 78% more cooling surface area and volume than stock
- 100% TIG welded and pressure tested
- Installation hardware included (inclusive of xDrive specific transmission oil cooler brackets)
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4.9 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Helpful
Format: Paperback
This is a nice compliment to other classroom instruction materials. I am teaching an advanced pathophysiology course in a nurse practitioner program. This book is very helpful for students to put together the concepts of patho with the clinical setting. Will use these for in-class group assignments. Case-studies are thorough and offer a variety of different disease processes to choose from. It certainly does not offer a case study for every possible disease or clinical scenario, but does cover most major areas and enough variety in my opinion. Should be helpful in reinforcing the clinical significance of some difficult to understand concepts. I would recommend this text to course instructors.
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Reviewed in the United States on August 5, 2013
★★★★★ 5
As promised
Format: Paperback
Accurate product, no damage or marking noticed
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Reviewed in the United States on November 6, 2025
★★★★★ 5
Good book!
Format: Paperback
Very helpful book for pathophysiology. The CD not only gives you answers to the case studies but gives you clear details of the clinical Pathophysiology of a particular disease. Definitely recommend it to students going for their Master's degree!
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Reviewed in the United States on February 19, 2015
★★★★★ 3
No Answers Provided to Case Studies
Format: Paperback
The cases are helpful; however, realize that there are NO answers whatsoever to the questions presented in the cases--not a huge problem I suppose, b/c you can google everything, but certainly an annoyance. (esp. when there are multiple possible answers. The author states in the foreword that some of the cases are real; in which case, why not provide the justification presented in the patient's chart as to why that patient takes a particular drug, esp. considering that you may take a drug for its side effects rather than its therapeutic effect. . .anyhow. . )
I think if the author provided at least SOME insight/guidance to the cases that it would be much more helpful, but until then, I'm skeptical as to why others gave this book 5 stars.
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Reviewed in the United States on July 23, 2016
★★★★★ 5
... for a Patho class and thought it was a great resource. My group had hypertension and it was ...
Format: Paperback
Used this for a Patho class and thought it was a great resource. My group had hypertension and it was really good about giving an overview of the disease without overwhelming you with information. Some of the studies were obvious as to why the disorder occurred but in those cases it helped link body systems and show interactions.
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Reviewed in the United States on June 19, 2015