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If your trying to find your accurate A/F ratio you can't go past one of these:
http://www.zeitronix.com/Products/zt2/zt2.htm
They are dead set the easist thing to use and provide real time readings to 1 decimal point. Check out the website, it doesn't just cover the a/f ratio it does EGT, throttle position etc. The only downside is that you will need a laptop for the output readings.
The problem you will have with the stock o2 sensor is that it only varies about 1v or so, not really enough to reveal broad range of readings.

Cons: it might set you back near $400 and it looks like they need to be imported from the US.
 

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ive got one in my glove box that i need to get around to installing to my new 626, but i got it from motoquipe at westlakes its a 2inch gauge with a blue back-lit display for under $50.:smokin:
 

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Shibbs - There is a company in Canberra that make Widebands and I think they are cheaper than that. Can't remember the details about it now, but I think I got the info from this site.
 

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i got an autometer a/f one somewhere
 

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Wasnt that part of our trade amrk *lol* Im so lsot..I dont remember..just p[m me bout it
 
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