O2 simulator
where can i find an O2 simulator for my 1991 supra. it supposedly sends info telling the ecu that there is no problem with the exhaust which keeps my check engine light off and pull my gas mileage back up.
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91 N/A automatic supra;K&N FIPK;2.5" custom exhaust;no cat;pacesetter header;eibach springs;tokico "blues";MKIV TT rims
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