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412, 2017

Diagnosing a Failing BMW Vanos System – When to Repair Your Vanos

By |December 4th, 2017|Categories: N54 Maintenance|15 Comments

When to Replace or Rebuild your BMW VANOS System This guide brought to you by BMW N54 Tuners will explain what the VANOS system is, the importance of the technology, and most importantly when and why it should be replaced or rebuilt. The VANOS system isn't unique to the N54 engine; it is used in many variations of BMW engines. However, for tuning purposes it is important to at least be able to identify VANOS problems, and know how to [...]

2011, 2017

BMW N54 Downpipes: Catless vs. Catted High-Flow Downpipes

By |November 20th, 2017|Categories: N54 Tuning Guides|3 Comments

N54 Catless vs. Catted Downpipes Why Upgrade my N54 Downpipes? One of the biggest restrictions on the N54 powered 135i, 335i and 535i is the factory catted downpipes. Downpipes bolt directly to the turbochargers and the factory catalytic converters create significant back-pressure which results in slower turbo spool. Modifying your N54 with catless or high-flow catted downpipes results in faster spool, tremendous power gains, and an aggressive exhaust note. Upgraded downpipes are a great modification especially for N54's that have [...]

1111, 2017

Why you NEED New Plugs & Coils prior to a JB4 Install

By |November 11th, 2017|Categories: General, N54 Maintenance|0 Comments

Why you NEED to Change your Spark Plugs & Ignition Coils prior to a JB4 Install If you have been around our site and read a few of our other posts, you know we preach one thing: changing your spark plugs and ignition coils BEFORE you install a JB4. Well I didn't follow my own rule... I was sitting at work and got a notification that a new item had been posted for sale on the Facebook marketplace in one [...]