I have recently purchased a 2013 ml350 bluetec that the previous owner had just replaced the turbo.
Well in doing so other problems started arisig and he's been great. He's been fixing whatever he needs to try to get fit in good running order (on driving it home it went into limp mode....did a couple of times then wouldn't start) He's gutted the dpf and deleted it from the computer and got it running and sounding good but stuck in limp mode. He then removed the EGR and cleaned it out..(was horribly dirty/clogged up) And it is no longer in limp mode. He was going to even delete the EGR for me and tune it all but of course the tuner is like $700. But as it stands (he is also replacing the exhaust sensor as it had some code) but with what he's done.. sounding like I shouldn't need the defblue anymore but...what I'm wondering is if I should expect to have other issues, if I need to delete the EGR and tune ASAP or if what has been done should be okay and not damaging for now? I can't really afford the tuner, but hes sounding pretty sure that it should be fine. So...being what it sounds that he's done. Is this pretty decent or should I be worried about anything else ATM? (Sensors at dpf..if the dpf has been been deleted but they're still connected and showing up on a scan, or the EGR or clogging etc?)