Hi guys, I too now have a miss, I have tried a few things I'll tell you what I've done and you can hopfully tell me what to try next?
It is a R32 GTR It will only miss when hot (about 85 plus on the power FC) once hot will miss at idle but if left to idle for a few minutes it will cool down enough to go away but as soon as you try to put it on boost (4000rpm to 5500rpm) the missing very clear.
Whist it is missing at idle I have been able to test what cylinder is missing and it is forth pot back from the front of the car every time. I have swaped and changed plugs and coil packs but always the same (pot number 4) and getting a bit worse every day. it makes no diff what boost setting it is on. The plugs all look the same (but are all very lean looking)
The last work I do to the car was replace the clutch in the air con compresser and give it and oil change and new coolant, I don't think I changed anything by that but may have bumped something. started playing next time it got up to temp.
What should I try next?
Also can the miture be turned up a little while I'm waiting to do other work (dumps, turbos) so as its not too lean ( will be dynoed after the extra work is done)