I just replaced my stock TCV with a HD TCV made by IPD. Everyone on IPDs forum talks about how easy the installation was and how well it worked. I admit it was very easy to install but I have yet to get the car running properly. After I had installed it, I went through the suggested "breaking in" procedures that IPD provided in the installation instructions. After this I took it out and it ran great. came back to drop my friend off that had been helping me with the install. Dropped him off and headed him and suddenly the car was having issues with what I assume to be boost around 4,000 rpm. The car has virtually no power at this point and then starts to shudder. I know that the ECU is adaptive and I even did a hard reset so that it would be easier for the car to learn the new system. I then went back out and Went through ipds procedures the car was still doing this. Now this was all in the span of a few hours but i assumed that the ECU would adapt after these breaking in procedures were performed. How long does the system take too adapt? have I just not waited long enough or is something else going on that I need to take care of? Up until now the car had been running great. I also installed IPDs short ram air intake today as well could this be causing problems some how? Someone please help this was supposed to be a performance upgrade and it seems to have screwed some things up!!