I swapped out the Headers uppipe and DP, and ever since I changed them the car does not seem to hit any boost. It's real slow. I have the uppipe fix on, and no check engine light. Can my car not make boost now due to these mods, it doesn't sound like it, but something is drastically wrong. It idles fine, and now it just seems the turbo isn't working right. GT spec header Perrin uppipe and DP. Can someone please help. Any suggestions would be helpful. Can my ECU be screwed up due to these changes? I'm desperate.

 

I'm going to try and reset the ECU overnight. But any help would be greatly appreciated.

 

I have a very alike setup, GT Spec header w/up pipe, perrin DP and stock catback. I ran into the same problem. I was only able to make ~10 lbs of boost. After redo the whole installation 3 times and fix all those minor exhaust leak, I am all back to normal and boosting 16lbs. Look for gas leak and the sooner you take care of that, you shall be fine

 

The Perrin DP, which I originally thought was the **** caused all my problems. No leaks, but the flange between the DP and the wastegate dump was not set up correctly, and my wastegate got stuck on it, and was stuck open. Anyway after a little grinding and poloshing, exerything went back together sweet, and it runs like a dream. Well a loud *** dream.