I installed the catless midpipe from lucky 7 racing on my fd. Did that delete my pre cat as well or no? Also I have an old school jdm hks super drager and it's just so big it sits 3 inches off the ground and I heard the early ones weren't very good. Looking for louder. Since I have a power fc could I hypothetically straight pipe from the midpipe back and not get boost creep?

 

If you have a JDM car you don't have a precat, only US cars came with precats. Google for pictures, it's VERY bulky and heavy. Most likely you have the stock JDM downpipe which has no cat. A good downpipe will out-flow it and make more power but at least it isn't a giant hot thing like the pre cat.

That said, the PFC doesn't have much to do with boost creep. The stock boost control setup with pills and the waste gate control/precontrol does. With a full open exhaust you WILL have creep. The PFC at least can be tuned to handle the higher boost but you may not want that much boost at this time. Read up on this, this topic has been covered to death over the years.

Dale