Dan The Westach 2C5-56 O2 gauge reads from 0.2 volts to 0.8 volts. This gauge will only work with a narrow-band O2 sensor operating with an electronic Engine Control Unit as found on most production automobiles. The voltage transition through the stochiometric 14.7 to 1 ratio is very fast; you will not be able to get much use out of this gauge in a non-ECU, manual mixture control setup. The Pep Boys O2 gauge also reads from 0.2 volts to 0.8 volts. Limitations are same as for the Westach unit stated above, i.e. not practical for manual mixture control. The TurboNeonStore.com 30-4100 will work with a wide-band O2 sensor reading from 0 to 5 volts. Display is LCD. This gauge will not work with narrow band O2 sensors. At $254.95, this seems a bit pricey.
Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA smw...@md.metrocast.net ----------------------------------------- Hi Dan, Here are some links to try for the O2 gauge with an analog needle http://www.turboneonstore.com/customer/product.php?productid=381&cat=0&bestseller=Y http://faculty.ccp.edu/faculty/dreed/Campingart/jettatech/afr/index.htm http://westach.com/ Hope this helps Bobby Burington California KR Builder
