Could someone tell me where the idle mixture screw is please, as put std air box on intead off k&n and is now running a bit rich on idle thanks lee

 

Are you talking about the mixture screw on the metering unit ?

 

Its ok have found the idle mixture screw now, where is the other mixture screw for on boost?

 

Sounds like you need to get the car setup and tuned by someone with some experiance, before you do more damage than good.

The airfilter/box will make very little, if any difference to the amount of the fueling and should not need adjusting due to this change.

Any screw on the metering unit shouldnt be touched without decent equipment to check what you are doing is safe!

 

WHS leave it the hell alone and take it to a reputable tuner!