whats an N80 valve

[northyracing]

whats an N80 valve and what does it do could this be the thing thats causing my juddery idle as i have changed PCV, DV coil packs and plugs

[Saintsteve]

Can u post a vid of what your suffering from? Rev counter etc

[northyracing]

cant seem to post pics or vids but basically once car has been driven and warms up once you pull up to lights etc the car idles fine then a slight juddery feel like a missfire but the rev counter does not budge and in slow traffic you can feel a juddering at low speeds then once the boost is up and speeds up its fine

[Saintsteve]

cant seem to post pics or vids but basically once car has been driven and warms up once you pull up to lights etc the car idles fine then a slight juddery feel like a missfire but the rev counter does not budge and in slow traffic you can feel a juddering at low speeds then once the boost is up and speeds up its fine

Get it logged..

VCDS will find out whether you have some sort of coil pack misfire occurring .

[northyracing]

thats the only thing i dont have VCDS would a normal say snap on diognostics machine do the same thing as the VCDS as he can get a live reading of the car running

[northyracing]

had the car plugged in today no problem with anything no codes atall no misfires but still idles really bad so dont know what route to take now

[Saintsteve]

had the car plugged in today no problem with anything no codes atall no misfires but still idles really bad so dont know what route to take now

Then if nothing is flagging electrically,  then next step would be compression check,  emission test to check the weather high your hydrocarbons are. Or see if you have injector issues logging live cylinder misfires etc

[northyracing]

we ran a live reading and everything was running as it should nothing stood out no missfireing found very strange

[doylebros]

Have a read of this it may help you

http://www.golfmkv.com/forums/showthread.php?t=119267