BMW N55 Downpipes Guide: Catless vs. High-Flow
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BMW N55 Downpipes Guide: Catless vs. High-Flow

The exhaust downpipe is the first part of the exhaust system on the N55 engine. It bolts-up straight to the turbocharger and passes air from the turbo to the cat-back portion of the full exhaust system. The OEM downpipes have catalytic converters on them, for emissions purposes. However, the catalytic converters are extremely restrictive and…

BMW MHD Tuning App – N54, N55, S55, B58 & N13 Flash Tunes
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BMW MHD Tuning App – N54, N55, S55, B58 & N13 Flash Tunes

MHD offers flash tunes for the turbo BMW N54, N55, S55, B58, and N13 engines. Their app is easy to use and makes tuning your BMW a breeze. However, the app is only available on android devices. Unfortunately, Apple prohibits the use of 3rd party USB cables, so iOS is out of luck (not completely)….

How to Prevent N54 Chargepipe Failure
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How to Prevent N54 Chargepipe Failure

BMW’s boost pressure release system is controlled by a diverter valve instead of a traditional blow off valve. A diverter valve serves the same purpose as a blow off valve, although they function somewhat differently. N54’s come stock with diverter valves, mounted onto a chargepipe, which is responsible for routing air to the engine. As…