There are many myths and dangerous practices in the world of chip tuning - one of the most common and at the same time most harmful methods is increasing the injection duration in order to inject more fuel and thus generate more power.
What many people don't know: Simply extending the injection time leads to decalibration of the injectors and can cause serious damage in the long term. In this article, we'll show you why this method is not only inefficient, but also dangerous.
⚠️ Why many tuners mistakenly increase the injection duration
The idea behind this method is simple: by extending the injection time, more fuel gets into the combustion chamber, which theoretically leads to more power. But that's exactly where the problem lies:
- 🔴 Incorrect lambda values: The air-fuel mixture (AFR) is outside the optimal range.
- 🔴 Injector decalibration: The injectors are operated outside their intended working range.
- 🔴 Uncontrolled combustion: The injection timing overlaps the ignition timing, which leads to glow ignition and a tendency to knock.
- 🔴 Increased soot formation: Carbon deposits can increase, especially in direct injection engines.
Instead of a real increase in performance, you only get an inefficient and dangerous engine run . ❌
🔥 The problems of extended injection time
📌 1. Decalibration of the injectors
Injectors are calibrated for a specific injection duration and fuel quantity. If the injection time is artificially extended:
- ✔ The injector is operating outside of its precise dosing capabilities.
- ✔ Fuel atomization becomes worse, which reduces combustion efficiency.
- ✔ Uneven combustion and misfires may occur.
📌 2. Overlap with the ignition timing
Modern engine controls are programmed so that the injection is optimally coordinated with the ignition timing. If the injection duration is extended:
- ✔ Can fuel still be injected while ignition is already taking place.
- ✔ This leads to glow ignitions, detonations and high thermal stress.
- ✔ In the worst case, this can lead to engine damage.
📌 3. Incorrect AFR (air-fuel ratio) values
The engine needs a precise air-fuel ratio to run optimally. If the injection duration is increased but the air quantity is not adjusted correctly:
- ✔ The mixture becomes too rich or too lean, which causes a loss of performance.
- ✔ The EGR system and the catalytic converter can be damaged.
- ✔ In the worst case, the engine may start to knock.
✅ How we at Stefanel Performance optimize the injection system
Instead of simply extending the injection duration, we use a clean calibration of the fuel maps.
🔍 Exact adjustment of the injection quantities
- ✔ Instead of just extending the duration, we calculate the ideal amount of fuel.
- ✔ The maps are correctly extrapolated to ensure uniform injection.
- ✔ The adjustment takes place in interaction with boost pressure and ignition maps .
⚙️ Perfect coordination of AFR & Lambda
- ✔ Our software keeps the air-fuel mixture in the optimal range.
- ✔ No unnecessary soot formation, no loss of performance due to inefficient combustion.
- ✔ Longevity of engine & injectors is maintained.
🔥 Maximum performance through precise ignition and fuel adjustment
- ✔ Instead of moving the injectors out of the optimal range, we use a coordinated combination of fuel adjustment & ignition timing.
- ✔ Our adaptation enables higher performance without compromising durability .
- ✔ We avoid all problems caused by simple % tuning methods.
🛠️ Why Stefanel Performance?
✔ No cheap tricks – we calibrate professionally.
✔ Perfect coordination of fuel, ignition & boost pressure .
✔ Maximum performance with safety – without injector wear.
✔ Long-term optimization – no risky interventions.
📞 Book professional map optimization now!
🔥 More power, but properly tuned – for maximum performance!
📞 Contact: +49 (0) 8031 409 2134
💬 WhatsApp: Write us a message
Clean performance, no false tricks! 🚀
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#StefanelPerformance #InjectionOptimization #NoPercentTuning #EngineCalibration #ECUOntimation #PerformanceTuning #Chiptuning #SafePerformanceIncrease