On my grey Micra i changed the front suspension top mounts and rear shocks. And discovered that there are different stock injectors, normal ones (from pre-facelifts) and ones with black dots (from facelifts). Normal ones seems to deliver more fuel than dotted ones, dont know why tho...
I noticed that it overfuels at idle and low load (made my grey rear bumper go black, like a diesel :eek:) and sometimes it would underfuel at high revs, dont worth the hassle really, just stick with stock TB/MAF if you dont have any crazy setup...
Well, i had a similar noise on my 1.0, like big end bearings, but only when the engine was hot but stopped, then restarted after a couple of minutes, after some seconds the noise disappears... o_O
The red led is normal to flash with ignition OFF. I was talking about the engine management light on the cluster, if it stays on when you turn the key to ON, thats good, if it blinks, its a NATS issue...