This week the boys visit the dark side of OBD II diagnostics when they delve into the murky & mysterious world of Mode 6 troubleshooting. Ray describes how he employed the scanner genius, Joe D. to have his back while sorting out a PO420 code on a family car. There's some talk about the electric cooling fan SNAFU in the GTO, and they boys kick around their choices for shop vacs... and one may surprise you!  Check our social media feed to see the pictures; on Instagram: @real_motormouthradio and on You Tube: https://youtu.be/GnJGcrxpSqQ