Did you notice if you were losing traction at all? I've noticed that If the car detects any sort of wheel spin it will not shift as fast. Since you increased the power there is a good chance you are losing traction.,
Yeah doesn't hurt to check. They could have snipped the zip tie before installing it and simply placed the DP down to roughly and it could have popped out.
I can't recall if it was already mentioned in this thread but did you make sure the gasket was installed in between the DP and turbo housing?? A lot of people miss it because it sits inside the DP flange.
Literally just because it's HKS
I personally think the 3D Maxpider mats are ugly, as are pretty much most all weather mats.
I already have Weathertechs for the winter time. I got these because I like HKS and prefer nice plush carpet floormats for the other 3 seasons.