Just a bit of advice I need or has anyone gone through similar to me,
So I went down to R-tech and they give me a list of issues. Low fuel pressure on codes,fuel trims at 0.6 - 3.4, cold side turbo fins are broken and a misfire on cylinder 3 and 4 (the misfire is not noticeable at all) since then I have changed the turbo to a anti surge hybrid turbo, new NGK plugs (supplied by R-tech) new PCV valve and pipes (supplied by R-tech) I’ve got my injectors tested and cleaned and they come back fine. I have had a new RS4 return valve fitted and my fuel pressure and fuel trims seem to be okay. A compression test has been carried out and is perfectly fine as well. I have changed the cam follower in the high pressure fuel pump also. I haven’t checked the car since the injectors have been cleaned but as there was no problem I’m assuming the misfire is still going to be there. So my question is, what else could be causing this misfire? I have a plug in system map by revo and since then a lot of mods have been added. Could it be that? I have changed over coil packs from 3 & 4 to 1 & 2 and the misfire stays in the same place. I’m just so confused on what else this could be🤣