i did have the ecu tuned. i just didn't tell the dealer that detail.

Update:

I ended up reinstalling the egr valve as i did not like the racepipe and the sound it was making. smaller diameter does not make any sense.

upon installing the egr valve i got limp mode on the high way a few times. turns out the egr cooler outlet port is not that simple to block off.

had to go and purchase a copper test pipe from home depot and proceed to clamp it in extremely tight with a clamp. after multiple test under water to make sure the outlet was perfectly sealed i was able to get it to be completely shut.

I wonder how many other boost leaks there are in the system. thinking of hooking up a vacuum to the intake to see if there is any other leaks.