Check engine light on
 

I sent my Mazda to car x to run diagnostics for me and this is what they come down with .. that my vehicle needs DPFE SENSOR ALSO HAS CLOGGED UP CONVERTERS AND IS ALSO SHOWING MISSFIRES IN CYLINDER 2,4,5,,6 need to start with replacing the the converts and DPFE SENSORS THEN RETEST FOR MISFIRES ... but the problem is they going to charge me 6000 dollars to fix all that ... the truth of the matter is I don’t have that money and I want to make it my project to fix it myself .. buy the parts and fix it ..
anybody with suggestions will be greatly appreciated

Hi, I moved your thread from Site Updates to General Tech. Hopefully your question gets answered here. Thanks!

What vehicle do you have?