this ^ Just to add, to adjust the idle on the N/A its a little different they dont have the said "screw".......the only way we can adjust it is via a small allen screw at the throttle cable end on the throttle body. this is factory set and has some sort of yellow liquid seal on so should never need messing with......meaning if the car does have idle issues try and sort them and use this only as a last resort..... throttle body gasket can cause idle issues clean the ICV Reset the TPS (calibrate it) this was the issue with amjad clean all the earths + add a few more service it the list is endless but if you done that much and still cant idle post up lol