Help sorting slight miss

[C.callander]

Hey guys any ideas on my culprit on my miss fire been chasing it for months, my r33 s2  Rb25de has a slight miss / rough idle which can sometimes be heard when i give it a rev the thing that makes it harder is it comes n goes. Things iv checked n fixed are checked intake for air leaks there are none, replaced my coil loom with a brand new one, brand new spark plugs, reset the timing with timing light. Im going to be getting the injectors serviced soon. I done a compression test about 3 months ago and got 160 av so should be sweet there. Any ideas or tips highly appreciated cheers 

[robbo_rb180]

Get a consult adapter and check for error codes

Borrow a set of good condition (brand new stock/splitfire or r35 kit not yellow/red/linglong) coils and see if that works 

Test fuel pressure by putting a gauge between the filter and reg

Check tps voltage scales evenly and doesn't jump around 

 

OR

take it to a mechanic who deals with 90s Japanese cars 

[GTSBoy]

CAS wiring/pins might be shaky. CAS disc might be dirty. CAS bearing might be shitty.

AFM wiring/pins ditto. AFM element ditto. Less likely than CAS to cause shaky idle, but still possible.