Mine runs at around 10 (guessin from the factory gauge). But it seems to not want to go any more than that (in 3rd). I dunno if I have a leak or whether i've damaged something, but it doesn't have the kick it had when I first fitted the valve. I'm having a 'Volvo repairing' sesion with my cuz on Friday (he needs his cv boot changing) so I'm gonna strip it all down and have a look (and a clean, intake is full of oil/residue).

You hit the fuel cut yet?