ok, so i installed my manual boost controller today inline with me N75. When driving , inbetween 10 and 15psi i sometime will hold and sometimes the car will start to boost but randomly fall on its face. It jerks very badly and almost gives me and my passanger wiplash. I dont think its limp mode because it dosent run 2 psi right after and i dont have any codes. Im thinking its my DV so i would love to know if any of you guys can gimme an advice on what it may be. I also have a 4 bar fpr so i dont think im running lean with just 10- 15 psi. thanks alot for all your help guys. All in the car is stock except, cone filter, borla,
atp-testpipe.