[turbotalon1g]

Originally Posted by niterydr

NGK AFX probably has the most accurate heater control circuit and sensor available on the market. A standard 0-5V output means it can interface with most inputs, many ecu's utilize the EGR system as a way of monitoring.

AEM's systems are good, I run a dual channel on my stealth. I bought it for a song and dance on E-bay, otherwise I would have went with NGK AFX monitors. Calibration is key to success.

X2.