So my son's 4runner has a broken bolt I think on the exhaust manifold... Has a nice tiktiktik exhaust leak and a cel for new cats... But I was able to reset the code and it passed emissions fine. AA Muffler says the leak is probably introducing air there and causing the code. Only issue is he says they don't do that kind of work, and Toy Car Care also says they don't. Any ideas on where to take it? The thing runs and drives awesome... But with the cel on, the stability control is also turned off and I don't want him driving it in the rain/snow etc with it off. Thanks all.