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Description
do88 BigPack BMW F8X M3 M4, Intercooler + Pipes + RadiatorsThis is our different BigPack configurations for the BMW M3 M4 F8X. These are complete packages for the charge air cooling system with drop in fitment! The S55 turbo engine that powers the BMW M3 M4 F8X uses a Top mounted water cooled intercooler instead of an regular; air cooled intercooler. The stock top mounted intercooler has a Tube&Fin core with clamped plastic end tanks. This construction has its drawbacks since it is prone to crack and start
This is our different BigPack configurations for the BMW M3 / M4 F8X. These are complete packages for the charge air cooling system with drop-in-fitment!The S55 turbo engine that powers the BMW M3 / M4 F8X uses a Top mounted water-cooled intercooler instead of an regular; air-cooled intercooler. The stock top mounted intercooler has a Tube&Fin core with clamped plastic end tanks. This construction has its drawbacks since it is prone to crack and start leaking coolant into engine or leaking boost pressure out of the tank sealings.
The coolant in this system has its own separate cooling circuit combined of two parallel connected radiators and a pump. The larger one of these two parallel connected radiators is positioned in the front of the center cooling pack, the second smaller one is located in front of the right-side wheel arch.
These cars are equipped with plastic intercooler pipes on both the hot and cold side. These pipes are a week link on any tuned car or in some cases even on a stock tune. The OE plastic pipes often crack / split leaving you with a boost leak.
We have designed upgrades for all these parts by advanced 3D scanning and 3D modeling in the scanned environment. We conducted CFD simulations on most parts and several tests to make sure we deliver the best performance upgrade!
You can choose between three different options for this product.
1. Intercooler and both intercooler pipe kits
2. Intercooler and both radiators for intercooler system
3. Intercooler, both intercooler pipes and both radiators for intercooler system
Our performance intercooler helps your engine to make more power both by lowering the intake air temperature and lowering the pressure drop! It is a bar and plate unit with 3D freeform designed end tanks TIG welded to the core. It has a core volume 85% larger than stock intercooler and outperforms the stock unit both when it comes to air flow and cooling efficiency. 16% better flow and 9°C lower IAT, so with both better flow and lower IAT this is a true upgrade!
Our radiators for the charge air cooling circuit lowers the water temperature in the charge air cooling system circuit. This is equal to lower intake air temperature which gives both more power and a more persistent performance. We achieve this by increased cooling face area, increased core thickness and well composed cores made with multichannel tubes!
Our intercooler piping, both the ones that goes from the turbochargers to the intercooler and the one that goes from intercooler to throttle body is designed to add durability and at the same time improve air flow. It is not easy to improve both reliability and improve air flow as the stock pipes flows well. With our software flow simulation and physical flow verification abilities we are sure that we are making improvements which is more than most suppliers of this kind of pipes can say!
For more information about the included parts visit the product pages for each one of them:
Intercooler
Turbo to intercooler pipes
Intercooler to throttle body pipe (J-pipe)
Front mounted (Large) intercooler system radiator
Side mounted (Small) intercooler system radiator
Significant advantages with do88 BigPack (differs between the configurations):
- Peak powergain of 13 hp! Measured on car with BootMod3 Stage 1 tune.
- Highest midrange powergain of 25 hp!
- Highest torque gain of 52 Nm!
- 9-14°C lower IAT, depending on configuration!
- 16-17% higher air flow!
| Fits: | BMW M3 / M3 Competition |
|
OEM-reference: |
17517846235, 11617846245, 11617846246 11617848447,11618057992 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Count on shrinkage when choosing your size.
Fit Type: Slim Fit, Color: White, Size: X-Large
I bought this shirt earlier and got an XL. It came and it fit perfectly. Couldn't believe it, but then I wondered what it would look like after one washing. It shrank. Not so bad that I couldn't wear it, but it no longer looked "perfect" and I I don't dare put on 5 pounds. But I liked the shirt overall, so I went back and ordered another, this time an XXL. It came, I tried it on and while it worked, it was slightly larger than I wanted. Instead of returning it, I washed it, and like the first, it shrunk, but it shrunk to a size that looked good and was comfortable. Lesson: you might want to go one size larger than you would ordinarily get, wear it to see how it fits, and if it seems too large, wash it and see if it makes a difference. The first shirt I would give 4 stars because shrinkage took away from it, but I'd give the second 5 stars because even more so after washing, the fit was very nice.
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Reviewed in the United States on April 23, 2025
★★★★★ 3
Good concept, details need some work.
Fit Type: Slim Fit, Color: Grey, Size: Small
Let's start with the positives. The quality of the cloth is great, it's a heavier cotton, but feels soft and durable. The overall slim fit cut was great too. The shoulders were a tiny bit too boxy for me personally, but I didn't wash it to see if the shirt would shrink and solve that issue.
The problem with this shirt is that it doesn't get the details right. It's almost like they just took a regular shirt and decided to produce it in a slim fit instead, without tweaking anything else. It's slightly too long to be left untucked, and for a cloth this heavy, it's not really something that you would really want to wear tucked in. I also find it weird that a slim fit shirt would have a box pleat on the back, since the whole point of a slim fit shirt is for a cleaner look on a trimmer guy. Finally, I like the button-down collar, but would consider hiding the buttons on the back of the collar so that you get a cleaner look. Unfortunately, these misses on the details make this shirt seem outdated. Other than the slim cut, it reminds me of something you might see from the 1990s, along with double pleated chinos.
Overall, doesn't seem like a good match for a younger, more stylish demographic that might want to wear a slim fit cut. Despite the great price, I'm definitely returning this one.
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Reviewed in the United States on January 31, 2019
★★★★★ 5
Very nice winter shirt.
Fit Type: Slim Fit, Color: Blue, Size: Large
These shirts are beyond what I expected. They’re thicker than I thought but not being too heavy. They wear well and they also wash up very well in permanent press and I dry them on permanent press also. No problem with wrinkles. I just take them out of the dryer and hang them up and they look great.
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Reviewed in the United States on December 14, 2025
★★★★★ 4
Amazon Essentials Mens shirt review - Good shirt, great value.
Fit Type: Slim Fit, Color: Grey, Size: X-Large
First, this is Oxford. This is a tough fabric that looks a little like pinpoint and feels a little like flannel. That is, it does not have the sheen of a dress shirt and is not as thick and soft as flannel. It hits a nice spot in between. The fabric is soft enough and thick enough to wear casually in the heat of summer. (It is cooler than a very thin and very cheap shirt due to it's absorbancy.) The fabric appears and feels to be quality.
The cut is good for me. It is tailored enough to look good tucked in and roomy enough for work and play.
The seams are doubled and good quality. I did not find mid seam knots, broken threads, etc. Seams are likely very durable.
The Goodthreads shirt is a little more expensive. It is a little thicker and softer. It is almost a flannel. However, the thickness and softness caused it to shrink more in the dryer. It loosened OK as I wore it, but I think after multiple washings and dryings, the Goodthreads may get a little tight. I have no concerns with the Essentials.
Good shirt.
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Reviewed in the United States on August 8, 2020
★★★★★ 5
nice fit
I am thoroughly impressed with this Amazon Essentials white shirt. For the price, the quality is outstanding. The fabric feels soft, breathable, and has a good weight to it
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Reviewed in the United States on June 12, 2026