if your not recirc'ing the bov, and im guessing since you have all hardpipes, you no longer have the midpipe with the bov recirc male end. It can cause issues like that if your not map tuned or have your maf relocated.
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-868 Miles on new jasper engine
-All hard pipes
-0.57 trim ct-26
-greddy type S
-greddy profec b
-apexi ride high 7 way adjustables
-eibach springs
-slotted rotors
-mkIV TT rims (front)245/45/17 (rear)285/40/17
-targa 
-greddy turbo timer
-egr eliminated
-3" turbo back, no cat, no resonator, Apexi N1 back.
-n/a cams
Theres others ill think of later.
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