Dig In By Engine

Turn Your BMW Into A Horsepower Monster

Dedicated to all things BMW Tuning

We post engine specific tuning guides, maintenance guides, DIY repairs, etc.

Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. You can say we are somewhat N54 fanatics. We are hoping to soon add an F80 M3 and F82 M4 GTS.

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Ultimate BMW M30 Engine Guide

It’s no secret that BMW has a special relationship with inline-6 engines. The straight-6 is to BMW what reliable econoboxes are to Honda or headache-inducing supercars are to Ferrari, nobody does them better. A case can be made that the BMW M30 is the engine that truly sealed in BMW’s unparalleled reputation for creating reliable,…

What Is BMW Rod Bearing Failure?

Of all of the reasons that people avoid purchasing aging BMW M cars, the fear of rod bearing failure is, without doubt, the most pervasive. It looms over any prospective E46 M3, E90 M3, E60 M5, or E63 M6 buyer’s head like a bomb with a random fuse, ready to explode and cause irreparable damage…

The 5 Most Powerful BMW Engines

It’s no secret BMW has made some excellent, fast high-performance cars. However, BMW has mostly kept away from horsepower wars, and has instead relied on building “The Ultimate Driving Machine”. Often, it’s about the handling and overall driving experience over pure power and straight-line speed. That doesn’t mean BMW hasn’t built some incredibly powerful engines,…

Best Investment BMWs in 2023 and 2024

If you’re in the BMW game, it shouldn’t be a secret that some of today’s BMW unicorns were everyone’s trash a decade ago. A clean example of an E39 M5 with sub-six-figure mileage could be fetched for around $10,000 in the 2010-2015 market. Now you’re looking at at least double that. The same could be…
Most Reliable BMW Engines

Most Reliable BMW Engines

Let’s face it, BMW doesn’t have the best reputation for reliability. When I told my father that I had just purchased a 30-year-old BMW 325i for a daily driver, he nearly laughed me out of the room. He, along with all of the wannabe comedians in my family loved throwing the oh-so-creative “Big Money Waster”…
N54 Single Turbo vs Twin Turbo Upgrade

N54 Single vs Twin Turbo Upgrades

Upgrading the N54 turbos isn’t a decision that most of us take lightly. It can be a serious financial commitment, and you want the money to feel like it was well spent. I know I personally spent a couple weeks deciding between N54 single vs twin turbo upgrades. Once I decided on twins, I then…
B58 High Pressuree Fuel Pump Upgrade

BMW B58 High Pressure Fuel Pump Upgrade Guide

One of the first roadblocks to making massive power from the BMW B58 straight-6 is the factory high-pressure fuel pump. While the factory B58 high-pressure fuel pump is a pretty capable piece of kit compared to the HPFPs found on older BMW turbocharged engines, it still taps out at around the 450whp mark on 93…

BMW i4 vs Tesla Model 3 – Which is Better?

With the death of the internal combustion engine looming on the horizon, it is no secret that most current auto manufacturers are trying to strike early with some new hard-hitting models, BMW included. While Tesla jumped in head first, dedicating all of their resources to their electric vehicle endeavors, BMW has obviously been splitting their…