Skyline R33 revs to hight on start up

[skyline-r33-gtst]

hi was just wondering if anyone has a cure for an over revving skyline, on start up it over revs at around 1500rpm, and when warm revs to 1200rpm, any idea how to turn it down, and also seems to lag in second and third gear on boost,
I've only just bought the car so very new to the skyline scene, my previous car was impreza and these were easy to work on compared to this skyline.
its a gts turbo 2.5
any help would be great
cheers

Edited by skyline-r33-gtst on Friday 17th February 21:46

[skyline-r33-gtst]

thanks for the reply. the hesitation has now stopped in 2nd and 3rd and running a lot better, however I'm still having trouble with idle going up and down . I have replaced the gasket on the idle valve controller and cleaned it all with carb cleaner but as soon as I turn the ac on or off the revs start going up and down again. ive been told it could be a air leak form somewhere but ive checked all hoses pipes ect, so still a little bit baffled
I will take a look on the other forums and many thanks for advice
cheers
nunny

[skyline-r33-gtst]

hi yes still got the issue, car hasn't been mapped and its standard ecu

[skyline-r33-gtst]

all sorted now, sprayed all plug connecters with electric contact cleaner all seems to be fine now