Normally when i switch the anti lag on when car is stationary the revs will drop like its going to stall!! then rev it and it spit and farts like it should.

But at the moment when i switch it on the revs just keep climbing so i have to switch it off, have spoke to Ahmed and he says its in the map on the chip, but could also be a sticking valve?? Any ideas as to where this valve is any one?? as i have no idea how anti lag works.

Many Thanks
Andy