The BMW S55 engine, found in the M2 Competition, M3, and M4, is a potent powerplant capable of impressive performance. However, to truly unlock its potential and achieve GTS levels of performance, a comprehensive tuning kit is essential. This guide explores critical upgrades and considerations for building a Gts Tuning Kit Car.
One highly recommended approach for tuning the S55 is using Bend Calibration with Ecutek software. Extensive forum discussions provide valuable insights, but key considerations remain. For 2019 models, depending on the production date, a DME (Digital Motor Electronics) bench unlock might be necessary. Crucially, if opting for Ecutek, the DME needs a specific unlock method using a bFlash. Using alternative tools can lead to compatibility issues with Ecutek, necessitating professional intervention, such as shipping the DME to a specialist like MarinTuned.
Addressing known weaknesses of the S55 is paramount for a reliable GTS build. Charge pipes are a common failure point and should be upgraded preemptively. For those considering ethanol fuel, Bend Calibration offers a dedicated kit incorporating a fuel filter and ethanol sensor.
The crank hub issue is a contentious topic among S55 owners. While a spun crank hub doesn’t always result in engine damage, it can lead to significant downtime and unplanned expenses. A preventative measure is installing a pinned crank hub, eliminating this potential failure point. While the risk of a spun hub exists without this upgrade, the decision to prioritize it depends on individual risk tolerance and long-term ownership plans.
Another frequent issue is leakage from the top-mount intercooler, leading to elevated intake air temperatures (IATs) and reduced engine timing. Upgrading to a performance intercooler, such as the Wagner intercooler, is a worthwhile investment. However, careful selection is crucial, as not all aftermarket intercoolers offer superior performance compared to the stock unit. Bend Calibration provides insightful blog posts comparing various intercooler options, highlighting the importance of informed decision-making.
Bend Calibration also offers guidance on achieving the “sweet spot” for S55 performance through a series of recommended upgrades. This comprehensive approach focuses on maximizing the engine’s potential while maintaining reliability. While pursuing the ultimate S55 build, prioritizing individual modifications based on budget and intended use is essential.
In conclusion, building a GTS tuning kit car requires careful consideration of key upgrades. Addressing potential weaknesses, such as charge pipes and the crank hub, is crucial. Optimizing performance with a tuned ECU and upgraded intercooler is essential for achieving GTS-level power. Thorough research and informed choices are paramount to building a reliable and exhilarating high-performance machine.
