With stock K03’s, fueling, and MAF sensor the EGT model had proven to be a close match to the readings recorded via the full range RS6 EGT sensors on my car.
Stock tune on dyno:
![K03 Stock Tune](https://myaudis4.com/wp-content/uploads/k03_stock_tune.png)
Nefmoto community tune on dyno:
![Nefmoto Tune](https://myaudis4.com/wp-content/uploads/k03_nef_tune.png)
NVR tune on dyno:
![NVR Stg2++ Tune](https://myaudis4.com/wp-content/uploads/k03_nvr_tune.png)
With my conversion over to RS4 K04’s, RS4 MAF sensor, and Bosch 72# EV14 fuel injectors I looked once more at how the modeled EGT’s compared with the readings from the RS6 EGT sensors.
K04 Stg3 tune on Street:
![Audi B5 S4 Modeled EGT's vs Measured EGT's](https://myaudis4.com/wp-content/uploads/egt_model_vs_sensor.png)
With this setup on the street the modeled temperatures are becoming less accurate. The mid-range modeled temperatures exceed those recorded by the sensors.