Just in case others have had trouble with trouble flash code "8" and interruption of afr readings with the inovate Bosch windband sensor and system, I did recently and figured I'd lost my wide band sensor. I was well on my way to stressing about that and the cost of replacement parts, but happened to visit the Invoate forums and noted a pattern of like issues and a recomended firmware upgrade to 1.20 (I believe I had been @ 1.0 from original installation) Did that this morning and presto back in business.
I'd recomend this upgrade for anyone having second thoughts about their investement, although this firmware is not listed in their library of downloads, it can be found rather easily by viewing the postings in the general forum.
Cheers
