Stock, the E39 530d 1999 model is running 65 mg/stroke. I'm currently running 77 mg/stroke. What's the max IQ I can run with the stock fuelling system?
You can do about 80mm3 but duration is getting long. If you use 1600bar, 100mm3 is ok. After that new nozzles required. 80mm3 will be starting to smoke on stock turbo.