Ok, I've read a few threads (if 20+ still counts as a few) on similar issues but wondered if anyone could help diagnose my specific problem.
My 159 1.9 suffers a 'judder'/'stutter' whatever you want to call it at low revs in most gears (around 1.8k revs). This problem started about 2 days after I had the EGR replaced when it failed and I've had the problem for around a year now. It feels like the car is jumping and the turbo needle drops when it's happening.
I've disconnected the MAF sensor for a run and the problem goes away. I ordered a 2nd hand MAF about 6 months ago off ebay for £15, and it ran fine... for a couple of hours.
I guess my question is, can the MAF alone cause this or does disconnecting that affect other systems too? Do I need to get a brand new MAF or would an EGR removal/remap do the trick? (Since the problem began with the new EGR, I'm still linking it to that in my head).
If EGR removal and remap would or may help, any recommendations close to Milton Keynes? I don't want the DPF removed, still a bit concerned about how they'll handle this with the MOT in future and intend to keep my car for a long time to come, but I understand that the EGR and remap can be done without DPF removal anyway.
Also, just looking for a new MAF online, I notice my original (and thus the replacement I bought) are Bosch part 0281002618, whereas when I look for MAF's for the 159 without using the part code, I'm told it should be 0281002861
... does this potentially mean I've had the wrong part in since I bought the car?