Is there a difference in performance and boost between the two? Do you lose out on some power if you VTA?

 

VTA makes the car run crappy at least at idel and in between shifts. The car will want to stall. I guess u can use the HKS EIDS to help with that. Or just buy a $2000 stand alone and listen to the real expensive PSSSHT sound.

 

If you want to hear the sound by a BOV that does both...I have the APS and it is i believe 70% recirc...30% VTA...it sounds great...also, if you have any sort of intake it will enhance the sound as well...