Quote:
Originally Posted by Q8y_drifter
Why not purchase the Uprev cable and use the Cipher software to read the stock widebands? The cable/software runs about $200 and you can datalog a lot of info other than AFR.
As for AFR at WOT, I've seen anywhere from 12.5:0-13:0 used on the VHR. Mine is tuned for 13.2:0 at WOT, with pretty much stock ignition timing (i have an HR G sedan)
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The stock widebands do not provide a consistently accurate number. The shape of the AF curve is generally correct, but the absolute number is not correct especially as you get richer and richer such as with forced induction.