I'm curious as to how corbins a/f and the a/f function on the timer relate. im presuming they preform the same function.

are they consistent and read with the same accuracy and speed?

has anyone used both and/or have any input regarding?

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Matt D.
'06 Evo IX SE
'98 RS-T 13.8 @ 106.1

Yes they are the same, Get the apexi and you will not regret it. You get 02 sensor voltage or a/f ratio, you pick the way you read it.

I edited to the wiki!