Another S/C'd member worried about his AFR

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Originally Posted by LtNoogie

I have not heard audible evidence of knocking like I did before I filled up with 91 octane. The only reason that I am guessing there is knocking is the ingition timing being retarded. I know others have to add octane boosters to stop their audible knocking.

I'll reset the ECU on Sunday and try the tests suggested.

Yea you are going to need to run 91 all the time now. Do you have the wiring diagram for your black box? It sounds like my suspicion that Blitz changed what the black box does might be true according to Camelll.