I understand that it actually reads the AF correct and not just a disco ball like the narrowband,but thats just alot of money for a gauge,when the tuners have it and use it to set you straight in a few hours.lol
and i read that that the bosch(sp?) only works for about 60k miles then you need to replace the sensor and thats another $100+ for an o2 sensor..

i know cant cheap out on turbo parts,but just seems silly for that gauge..when a narrowband will work decent after tuned..