okay, so I replaced the plugs and coilpacks beacuse i had them there anyway
also remove the avcs solenoid banjo bolt filters, however.....

idle is still dodgey

wideband AFR gauge arrived yesterday so i've now connected that up, i've noticed that when driving along normarlly with partial throttle the gauge sits around the 13-15 range although if i get off the gas pedal completely the gauge goes all the way to lean as the revs drop to idle... is this normal?

when i'm sitting stationary & the idle starts to wander the gauge is flickering on 18-20 & somethimes full lean

when i'm sitting stationary & the idle is fine the gauge flickers at 14.7-15 (which i think it should be doing all the time)

when car is at WOT the gauge shows no sign of running lean (flits qround between 11 & 13)

someone please coprrect me if i'm wrong but if it was in the tune, it would be a constant problem not intermittent wouldn't it ?

starting to think my injectors need a clean/service/replace ????

can i have some opinions please