Just spied this on ebay, was wondering how accurate they are fir measuring air/fuel ratio? Would an aem one be better? The autogauge one is fairly cheap so may be worth a look.
iv heard reports that they are way out mate, probs be better to save up and get a proper wide band.
edit- i have actually seen a autoguage wideband come to think of it but not sure how accurate they are if they use the bosch lambda i take it they have got to be ok.