Grotty Idlle..
 

The missus' WRX has been pretty un-eventful other than the idle suddenly gets really lumpy every now and then..

I was thinking a leaking hose but everything seems good, I've noticed the ISCV has got a coolant feed, could someone explain the purpose of this?

Also does anyone know if the ECU uses the Lambda for fueling at idle, the up-pipe has a slight leak so it might just be running rich-as-a-bitch..

Cheers for any advice :thumb:

Anyone? :)