OH! THAT cover! DOH! Sorry, my bad!
I completely forgot some ppl had those, none of my own 'Stangs have ever had 'em on there!
In this case, yeah, Mach's right. Lift it up and you should see the two screws. However, it still remains the same way to adjust the voltage as before: with the idle stop screw. Like he also said, it's sometimes a waste of time. If you've got nothing better to do, go for it. You *may* notice a better off-idle response (especially in MAF cars), but ususally it's driver perception. I'm pretty damn sensitive to things like this, so yeah, I'll sit there and bugger with it for as long as it takes for me to be happy.
