Hi I have a 2009 gp 1.6 jtd with 110k had problems with dpf and turbo boost problems but they seem to have cleared it self as I have no warning lights or anything telling me coming up on the dash anymore. Anyway between 1800 and 2100 rpm I have a bad miss fire/ hesitant flat spot. Anyone got any ideas what it maybe. Thanks in advance.

egr valve

Is there any guides on here to show me where it is and how to do it.