Low Rpm Performance Issues

[vidospace]

Hi,

I am having a few dramas with my GTR at low rpms.

When it is cold it sounds like its running on 5 cylinders at idle.

It hesitates when accelerating from a standing start at low throttle.

It is using up a shitload of fuel (80ks per 1/4 tank!).

On boost it is totally fine though. Like a different car. As soon as it is off boost it runs like crap. Now I just go the car so I am not sure if the computer has been played with or anything. I have a SAFC to go in and get dynoed but I want to try and sort out this low rpm issue before then.

I suspect it is a coil pack issue as it has new plugs in it and I have already tried an injector cleaner too. Can anyone suggest any other possible things I should be looking at?

Bryce

[Gazee]

Oxygen sensors?

[vidospace]

Oh I should also note that there is only a very very minor fluctuation in rpm at idle. Like 2mm if that on the needle. It starts fine and idles fine too (at 1000rpm)