ran a diagnostic scan today in my 97 z found egr valve, mass airflow sensor and front abs sensor are bad. would a tune that eliminated my back 02 sensors be making my egr code come on or not. also i found out today you have to buy a whole hub ***. just to replace the abs sensor, $350!!

 

did you look insdie your MAF,is it dirty? Did you descreen it?

 

i'm going to check it out right now. no i dindn't descreen it.

 

Turning off the rear 02 codes won't set EGR codes. EGR errors set EGR codes.

 

thanks, also the mass air flow sensor isn't dirty