Unfortunately, a boost controller can't control a boost creep like that. The reason your car is creeping is because your wastegate is too small. No matter what you do to the signal, the wastegate cannot open further.
If you want a cheap fix, you may be able to port the wastegate opening a little bit with a grinder.
BTW, how do you like the spec II? I just installed one in my car this evening, and personally, I think it's a great EBC.
If you want a cheap fix, you may be able to port the wastegate opening a little bit with a grinder.
BTW, how do you like the spec II? I just installed one in my car this evening, and personally, I think it's a great EBC.