SKU: 87704494444

AC Schnitzer 'Performance Upgrade' for 3 Series E92/E93 LCI

Sale price$2143.32 Regular price$2381.47
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

AC Schnitzer 'Performance Upgrade' for 3 Series E92/E93 LCIPhilosophy Technology Engine tuning and performance upgrades have a long tradition at AC Schnitzer. To be on the safe side, we forgo achieving the possible maximum power in favour of greater durability. Many of our performance upgrades are therefore designed to increase torque rather than horsepower. After all, torque is what you feel when, for example, you are "pressed into your seats" when moving off. Petrol The performance upgrade consists of a

Philosophy / Technology
Engine tuning and performance upgrades have a long tradition at AC Schnitzer. To be on the safe side, we forgo achieving the possible maximum power in favour of greater durability. Many of our performance upgrades are therefore designed to increase torque rather than horsepower. After all, torque is what you feel when, for example, you are "pressed into your seats" when moving off. Petrol The performance upgrade consists of a control unit for retrofitting in the vehicle. The control unit ensures that the data is processed depending on the engine speed and accelerator pedal position, and that the values ??for boost pressure, rail pressure and air mass are passed on to the standard engine control unit. The parameters are slightly increased by the AC Schnitzer performance upgrade. This achieves a model-dependent power increase of up to 20% of the engine and increases engine efficiency. During development, we check in which engine speed range the greatest increase in torque is achieved. Subsequently, the modified parameters are reduced in a controlled manner for the high-rev range above 5000 rpm. This prevents the engine from overheating during longer, fast journeys. The standard engine protection parameters are retained with the AC Schnitzer performance upgrade. In addition, the AC Schnitzer performance upgrade also features extensive additional parameters to protect the engine and drivetrain, such as cold start and overheat control.

Cold start control
The AC Schnitzer performance upgrades are only activated from approx. 1000 rpm and an oil temperature of 80°C.

Overload / overheating control
The power is automatically reduced to the standard power when the water temperature reaches 115°C.

Extensively tested
AC Schnitzer performance upgrades undergo extensive testing on racetracks, test benches, and in everyday road traffic. These tests last up to nine months and cover several tens of thousands of kilometres.

Performance upgrade installed - what about the warranty?
For all AC Schnitzer performance upgrades, AC Schnitzer provides a country-dependent warranty of up to 5 years from the date of first registration, with a mileage of up to 120,000 km, on the components moved by the engine. For M models, AC Schnitzer provides this country-dependent warranty of up to 4 years from the date of first registration and up to 80,000 km. This gives you peace of mind in the event of a problem. You can find our complete warranty conditions here.

Appraise
The parts certificate is an official document that permits the use of tuning parts on public roads under the StVZO (Road Traffic Licensing Regulations) in Germany (and several other countries). After the part described in the certificate has been installed or modified, the vehicle must be presented to an official inspection centre. The inspector will verify the correct installation and authenticity of the part and then enter the modification in the vehicle documents. The vehicle's official operating license thus remains valid. The parts certificate is part of the delivery package.

Scope of delivery:
- Control unit with software programming
- Vehicle-specific wiring harness with original plug connection
- Including component warranty: 3 years in Germany
- up to 5 years internationally
- Warranty conditions
- Aluminium badge for the engine compartment
- "efficient performance" sticker
- Performance upgrade certificate
- Certificate of authenticity
- Parts certificate

Uniqueness of the AC Schnitzer performance upgrade
- Additional control unit with programming
- "Plug & Play"
- optimised engine efficiency
- more power = improved agility
- Warranty: 3 years in Germany
- up to 5 years internationally
- Find our complete warranty terms and conditions here.
- Expert opinions for almost all performance upgrades
- Increased torque more important than horsepower
- Maximum power sacrificed to ensure engine stability and longevity
- Extensively tested
- Increased driving pleasure

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 87704494444

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R Secrest
Natrona Heights, US
★★★★★ 5
Very Warm and Comfortable
Size: 12-13, Color: Red/Black Check
Love these. Just like walking on a cloud. They are very warm. Note there is no L or R, fits either foot.
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Reviewed in the United States on April 30, 2026
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Geobub
Lowell, US
★★★★★ 3
Seams Separate Quickly
Size: 8-9, Color: Red/Black Check
They fall apart. The seams are terrible and almost immediately separate. Although they are warm and comfortable until stuff comes through the separated seams.
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Reviewed in the United States on March 29, 2026
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David Pritchett
Draper, US
★★★★★ 5
Meeting my expectations....
Size: 14-15, Color: Grey/White Check
I am a male with pretty large feet (Mens size 14US) and wanted some very warm slippers to wear around the house. I have nerve issues in my toes and if I don't keep my feet very warm they start to hurt. I wanted something both comfortable and warm. I received these a few days ago and so far they have done a great job at keeping my feet warm. The linings are thick and fluffy and the bottoms feel like they have a memory foam inner sole in them. The tops can either be worn up or rolled down. The actual soles are a soft leather-like material. They are thicker than normal cloth, but not hard like rubber soled slippers (I actually wanted something that was more of a slipper and less of a "shoe"). The only down side is that they don't really seem to have a left and right to them (both slippers seem identical), and for awhile no matter how I wore them, they felt a bit like they were on the wrong feet. However, they seem to have formed themselves to my feet and now (through wearing them) it definitely feels like there is a left and a right. I don't know how long these will last, but they were not expensive, so if I get a few months of wear from them, I will be happy and will just order another pair when these wear out. They aren't the most attractive slippers in the world, but they aren't horrible looking and they are very functional.
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Reviewed in the United States on February 24, 2025
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Verified Purchase
John Palmer
Charlottesville, US
★★★★★ 4
for polar fleece slippers with leather soles, these are quite nice
Size: 8-9, Color: Red/Black Check
I bought these to replace some Mug Lugs slippers last fall after they had started to come apart from barely a year of use (they were knitted) and have been wearing them constantly since then. The polar fleece does easily pill somewhat but get a hard use and are quite comfortable too. I wear these in the house most of the time as my feet do not like to wear shoes all day. They are comfortable, and do seem to hold up well. The only other issue is until I get my office chair mat replaced, these catch and can cause problems and have a little, but not enough to worry too much about. They supposedly have an anti slip design on the bottom, but if flour falls on the kitchen floor, not so slip resistant. I chose these as one, they are red, but also plaid and like them a lot. Hopefully, I get more than a years use out of them. I have had several polar fleece sock type slippers similar to these in the past, and the last polar fleece pair in Dk Blue and from Land End finally after several years of constant use, the stitching began to come apart and the sole was separating from the body of the slipper on one slipper. They do keep the feet warm, with or without socks and can, at times, get my feet too warm but I enjoy them quite a bit.
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Reviewed in the United States on May 3, 2025
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avalancheryder
Boise, US
★★★★★ 5
Absolute game changer for chronically dry feet/cracked heels
Size: S (up to size 7)-Beige
I had recently bought a pair of silicone heel/ankle wraps to fill out my boot a little since I noticed my heels were lifting when I was skating. I tested them out around the house and noticed they left my heels softer while the rest of my sockless feet got quite dry. So I got these full foot silicone socks to see the effect of having my whole foot covered. I slather the entirety of my feet with Dr. Scholl's Severe Cracked Heel Restoring Balm (love how convenient it is to apply it to my feet with the solid stick form) and then slip them into these silicone socks. After just a couple hours, when I pull out my feet they're (a teeny bit sweaty at first), but then overall soft and smooth and have absorbed the balm fully leaving barely any residue in the silicone sock. I find these silicone socks generally comfortable; I wear them in the evenings while relaxing on the couch, take them off after a couple hours and let my feet breathe a bit, and then reapply my balm and socks and wear them to bed. If I wake up in the middle of the night, which I almost always do (not because of the socks), I'll take the socks off and allow my feet to breathe again. I wear a woman's size 6 shoe and the small size is pretty comfortable. However, I made the mistake of wearing them while being on my feet for a couple hours straight during household chores -- they must've somehow cut off my circulation a bit with the standing, so I wouldn't recommend wearing these silicone socks while being active. And since they're not exactly my foot size, they slide around sometimes and will start to feel tight at my big toe. But if that happens, I just tug on the toe area of the sock to give my big toe more wiggle room and problem solved. Prior to wearing these socks, I was soaking and doing heavy duty exfoliation of my feet every week. These socks seem like they'll work to help me extend the time between soakings and exfoliations. The 5 pack is a great value. So far none have torn, so they seem rather durable. Not sure what I could even do to tear a hole in these.
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Reviewed in the United States on January 16, 2026

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