Open Loop vs Closed Loop
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
The range of accuracy for NB O2 sensors is .400v to .800v, which translates into 14.2-15.0:1 AFR. Once the fuel ratio is outside these limits, the accuracy of measurement rapidly deteriorates. This is why NB sensors are most-often used as a 14.7:1 AFR voltage switch.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
The XiED works great for cooling a motor a bit (fattens up the mix across the board). I ran them for months. But I wanted to get rid of an annoying surge and decel pop, which the XiED did nothing for. Its worth only a few points A/F WOT but sometimes that is all you need.
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