I just had an Invidia downpipe installed on my WRX. I already had an HKS dowpipe on there but I wanted a better one. I had the ECUTEK done too with the HKS downpipe on there. Anyways, once I had the Invidia downpipe installed today my car is running like shit. The whole car shakes when it idles and it almost stalls when it idles as well. When I accelerate it barely moves and the turbo doesnt kick in until around 6000rpm and even then it is really weak. I dont know what is going on. Maybe my maps are screwed up on my ECUTEK when they disconnected the O2 sensor and plugged it back in but its scaring the shit out of me. If anyone can help me please do so. I need some answers now before Monday when I take it to Mastro. PLEASE!!! thank you