Direct injection engines are extremely efficient, often boasting greater power and fuel efficiency numbers than their port-injected counterparts. A pitfall of this efficiency is carbon buildup, which coats your engine's intake valves over time and results in decreased performance.
Walnut blasting is the process of shooting high-pressure blasts of air and walnut shells directly at your engine's intake valves. This clears out the aforementioned carbon deposits and brings back your lost performance. This service can be very expensive, but is easy to do yourself with a few tools. One thing you'll need is media, such as this black walnut shell from Bavarian Autosport.
From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
All
All
N20 2.0L
Use vehicle selector to confirm fitment
BMW
All
All
N54 3.0L
Use vehicle selector to confirm fitment
BMW
All
All
N55 3.0L
Use vehicle selector to confirm fitment
BMW
All
All
N63 4.4L
Use vehicle selector to confirm fitment
MINI
All
All
All
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
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