I just installed my HKS SSQV and recirculated it back into the intake a few days ago. I only drove it for 15 miles but it ran PERFECT, just like it did before I installed it. It kept the turbo spooled between shifts, and the HKS RS Intake/bov seemed to help give a little quicker spool-up, but perhaps its my imagination. I dont know why people are having all these problems (Mainly the people that want to VTA) but my recirculated HKS SSQV runs perfect, no stalling, no nothing.