air leak. Ah ok. Well does this help. I took the hose of the top of my grp a dump valve and the revs went up and stayed there steady at just over 1k. And when i connected it again the iscv did its adjusment noise and carried on doing its usually thing. Thanks for the help guys. Can i run the car, once warmed up with the iscv loom connector disconnected with oit doing damage as when i disconect it the engine idles perfectly again once warmed up cause when cold the engine nearly stalls lol.