Tunes are often at the forefront of discussions when it comes to increasing horsepower. This is especially true with the number of forced induction engines on the market. BMW shifted nearly their entire lineup to turbo engines in the past decade. Fortunately, for us performance enthusiasts, turbo engines generally leave tons of power on the…
In this post, we will cover several common fault codes for the BMW N54 twin-turbo engine. These codes apply to the 135i, 1M, 335i, 535i, X6 and Z4 powered by the N54. Additionally, certain fault codes may apply to various non-N54 engines. If you are looking for more detailed information about some of the N54…
Yes, the B58 engine does have an intercooler. However, it is not the common intercooler setup you would see on most turbo vehicles. While most forced induction engines use “direct” air-to-air cooling, the B58 intercooler uses an “indirect” water-to-air cooling system. The B58 intercooler is integrated into the intake manifold. Compressed air flows through the…
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…
A lot of people cringe at the idea of a “cold-air” intake. Theory has it that a cold air intake has a bigger filter which lets in more particles which kills your engine life quicker. And that they don’t offer that much of a performance benefit. The first part about engine lifespan is blah blah….
The BMW S63tu is a 4.4L twin turbo V8 found in 2012-2017 M5 and M6 models. It produces an astounding 560hp and 500 lb-ft of torque from the factory. Even better, like many BMW engines, the S63 is also underrated. Aftermarket dyno tests show the S63 around 530whp and 520wtq. Nor does it end there….
While the phrase that something is “an art, not science” is used frequently, it does not hold true with turbo boost and tuning. Turbochargers, engine internals, and ancillarily engine support systems can only hold so much boost before they give in. We’re here to answer some frequently asked questions on B58 boost levels: How much…
What is the BMW MPPSK Package? The BMW MPPSK package stands for the “M-Performance Power and Sound Kit”. The kit is BMW-designed and manufactured and includes a more aggressive engine tune and a performance exhaust system to increase the performance, horsepower, and sound. The kit is only available for 40i models, featuring the B58 engine….
BMW forever left the world of naturally-aspirated performance motors in M-series cars in 2013 with the launch of the S55. Succeeding the NA V8 S65 motor, the S55 was a 3.0L twin-turbocharged inline-6. Despite being the performance version of the N55, the S55 has little in common: a closed deck block, twin turbos, forged pistons,…
Following our general MHD post, we will now go more in-depth on B58 MHD tunes and expected power gains. Scroll down a bit if you’re only interested in the power gains. Otherwise, let’s quickly discuss some basic MHD B58 tuning concepts. About B58 MHD Flash Tunes MHD offers OTS (off the shelf) flash tunes for…
What is the difference between PWG and EWG N55 engines? This question comes up often and is a big talking point regarding the N55’s performance. EWG and PWG refer to the turbocharger wastegates. Though it sounds like a minor difference, the wastegates play an important role in tuning and power. Let’s jump in and examine…
We’ll keep this post short as there isn’t much to go into. The N20 and N26 are basically the same exact engine. Feel free to leave it at that and stop reading. None of the differences between the N20 and N26 are too important. Both make the same power and torque. Additionally, the N20 and…
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