lancerboy,
welcome to the modding world, now that u've installed ur BOV it is the first poison u take till u finally changed to a MAP or speed density or blow thru setup, all Mass Air Flow is incompatible with Vent To Atmosphere BOV, think of the logic, assuming 14.5X of air = 1X amount of fuel, and if ur MAF measures and tells ur ECU 14.5X amount of air, ECU processes and tells ur injector 1x of fuel, and with ur sudden release of throttle, means full block up for ur throttle butterfly valve, ur BOV opens to prevent shockwave back to ur precious turbine and out to atmostphere, injector is shooting richer than it should, this causes jerking between gears and even stalling since the combustion at that particular moment is too rich....
to cure this prob, get a HKS EIDS, which i did, but please be regretful when buying this coz the setting that u can do has only two knobs - 1 for rich/lean, another for cut off point, u can't tune this to the best u could coz all the adjustments points are linear....
then u'll try get an safc2 or neo, only then to regret that it's not really performing up 2 wat u expected, then maybe emanage (unless u get some pros out there who can fully utilize the ULTIMATE in converting into a full MAP setup), but soon u'll realize that u still need to ditch ur MAF to the sea and feed the dolphins, there u go finally u'll be typing in the google on how to remove ur MAF convert to speed density, blow thru, MAP bla bla, only then u get to know u can't do much unless u change the whole ECU, which means getting a standalone ECU, and later u'll find that it's really expensive getting a standalone, then u'll start searching for more solutions, such as the MEGASQUIRT!!
CONCLUSION: make up ur choice, many MAF human beings can live with an VTA BOV, but not for me, tighten ur BOV will normally do fine (except the new HKSSQV that i have which has no adjustment), however tightening ur BOV means sending ur air shockwaving into ur precious turbine (u dun wanna kill ur turbine don't u??) coz tightening up the BOV settings means it'll only open at 0.3 bar or higher, some even experienced 0.5 bar to prevent stalling!!!!