Nice swift exit haha, yeah mate let the pros do it. Normally i think people should have a play about with cars and do a few mods themselves but it really depends on the person. Also i'm a mechanic but i wouldn't really want to fuck about with AFRs. As said it is a job for a tuner, imo it seems a little bit sketchy trying to set up AFRs on a wideband by yourself, good luck man.