Slant 6 Turbo 68Dart Project

any kind of exhaust leak is going to affect spool and pressure. try a remflex heat riser gasket. they are pretty thick have a nice crush and hold up pretty well. pcv shouldnt have any affect unless its bad. as soon as the boost comes on it should close the check valve and not do much of anything.

these are from my personal experience and lots and lots of reading and asking questions on various forums.

idle afr is what ever the motor wants. if its too lean it will not idle right and stumble when you hit the gas. to rich and your eyes will burn but it will run smooth and accelerate normally.

a good cruise afr is between 13-15. anywhere in there is safe and should net acceptable mpg. keep an eye on the temp, if you go over 15 it will start to run hotter. the trick is to find a good balance somewhere in there that the motor likes and gets you the best mpg you can.

light load should be 12-13. moderate load should be floating around 12. wot it should drop to 11.5 fairly quickly and stay there if not go slightly richer. remember lean is mean but fat is safe.

when letting off the gas a lean spike is going to happen. you are closing the venturi's and not letting air or fuel in so there is nothing to burn. as long as your bov is working properly there should be no pressure as soon as you let off the gas, the vacuum opens the bov and that dumps your pressure.

its always tedious getting a new setup to work and there is almost always something else to do. once you get past all the big ones it starts becoming fun because all of the work starts to pay off. stick with it man. you are almost there. you have all the hard stuff done. and hook the boost gauge to the manifold. its helpful in setting timing and idle mix. get the most vacuum you can. double check your clamps and seal off any exhaust leaks you might have and you should be set to turn it up a little for the first time.