Will definitely check it again, but leads have been on and off multiple times and leads are even numbered for each cylinder and current coil pack does even have numbers off to say which cylinder it goes to

a long shot but check for air leaks on the inlet side, use a spray bottle with water in it and literally just spray it on all surfaces, it will squeal if you find one. the fuel pressure is low and if the motor was under load, it would be using more fuel so the pressure would be even less so defiantly an area of concern but usually with low pressure you just get sluggish performance. do you have an old timing light, if so check all the spark plugs are working and see if the miss is electrical . you said you changed the maf , if so put the old one back on and see if there is a difference. some more things to check.

mad-as wrote:

a long shot but check for air leaks on the inlet side, use a spray bottle with water in it and literally just spray it on all surfaces, it will squeal if you find one. the fuel pressure is low and if the motor was under load, it would be using more fuel so the pressure would be even less so defiantly an area of concern but usually with low pressure you just get sluggish performance. do you have an old timing light, if so check all the spark plugs are working and see if the miss is electrical . you said you changed the maf , if so put the old one back on and see if there is a difference. some more things to check.

I’ve sprayed and sprays then inlet more times than I can think with brake cleaner, carb cleaner, water and literally nothing at all, no change in anything what so ever, I’ve put the old Maf back on already to stop it black smoking as that’s just pure unburnt fuel and I don’t want to melt the cars haha, honestly have no clue, usually I can figure these things out being a mechanic full time but this is testing me😂

if it's black unburnt fuel then it's definatly an electrical problem. i had issues with dodgey maf and ended up making a lead that i could pin the maf with using a multimeter . just squash and cut up some electrical clips and some heat shrink , dosn't have to look much as long as you can pin the conectors . i think from memory there is a power wire 5v a ground wire and a signal wire . if your a mechanic you would know not to short out or put power on the wrong wire. black one to ground red one on the wires , do not put power on signal wire or you will be replacing the ecu. this was the only way i could check the maf properly and convince my self it was the problem. the signal wire should be steady on the reading not all over the place.