Originally Posted by Knuckles84

After paying burton power another visit - I was told the iscv can be adjusted if I still have idle issues. So I've adjusted the iscv central nut to match the old iscv - the car now runs near enough spot on.
But like you say book it in for a rolling road setup. I've got a feeling someone just adjusted the base idle to mask the air leak from the inlet gaskets.

Even tried a star tester on it from my ford dealer but it wouldn't connect.