Intake upgrades are one of the most common engine modifications for good reason. They’re cheap, simple, and effective. While the S58’s factory intake system is efficient at stock boost, it becomes restrictive as you begin adding power and boost. It’s easy to understand why it becomes restrictive as the 3.0L twin turbo inline-6 is able…
Water-methanol injection (WMI) is a very capable form of fueling and cooling on turbo engines. Methanol is a high-octane fuel while water quickly cools temperatures due to its high specific heat capacity. Those are the two main benefits of N63 WMI, but it also comes with some risks. In this guide, I discuss BMW N63…
The BMW S58 is an incredible engine capable of making 750+whp on stock turbos with basic bolt-on mods. Among the best bolt-on upgrades are a set of catless or high-flow catted downpipes. Upgraded downpipes help reduce backpressure and improve turbo spool, which results in impressive performance gains. In this guide, we discuss S58 downpipe upgrades…
To some extent, it may seem foolish to compare the BMW B48 vs B58 engines. After all, the B58 is a 3.0L inline-6 that delivers up to 382 horsepower. The B48 is a much smaller 2.0L inline-4 that offers up to 255 horsepower. In that sense, these engines are targeting two different markets. However, is…
Spark plugs are standard maintenance on the BMW N54, and it’s equally important to address spark plugs when modifying the engine. The spark plugs are often a source of issues and headaches from misfires. As such, it’s important to install the right spark plugs with proper gapping (and replace them as normal maintenance). In this…
The BMW M50 engine is one of the brand’s first modern inline-six engines utilizing 21st-century engine technology. Compared to other BMW inline-six engines of the past, like the M20, the M50 was not only technically advanced for the time, but also reliable, capable, and easy to work on. It was also featured in some of…
While the N20 is often considered a stout and reliable engine, early versions of the engine have a major flaw with the design of the timing chain guides. The plastic guides are known to disintegrate, allowing excess slack in the timing chain, plastic particles in the oil filter, and excess timing chain wear. The N20…
The BMW N63 isn’t an engine known for reliability. At least in the early years of its production. With the introduction of later N63TU, TU2, and TU3 variants, reliability got much better than the pre-technical updated variant. One of the most significant issues with the early N63 engine was fuel injector failure. The Piezoelectric injectors…
The 5-Series is one of the most iconic models that BMW has ever released. With a history spanning more than 50 years, the 5-Series is the go-to luxury family-friendly sedan with plenty of performance too. With eight total generations, it can be hard to decide which year 5er is the right one to purchase. That’s…
In the eyes of many enthusiasts, the E46 represents the pinnacle of the 3-Series formula, and for a good reason. The wide array of solid, reliable engine options, unparalleled chassis dynamics, and timeless looks all culminate to produce one of the best BMW models of all time. However, the E46 isn’t without its issues, with…
The BMW M60 engine marked a return to the V8 formula for the Bavarian marque. Prior to the M60, BMW’s most recent V8 offering was carbureted. For the first modern V8 in their catalog, BMW knocked it out of the park with the M60, remaining a popular engine in BMW enthusiast circles to this day….
If you’ve ever thought about pulling the trigger on a BMW E46, there’s no doubt that you’ve heard of the infamous ‘subframe cracking’ issue that plagued every model of the E46 from 1999 to 2006. While the issue actually has to do with the E46’s rear axle carrier panel and its inability to withstand the…
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