Hi guys, I have to problem for couple months already, I feel like I'm loosing power sometimes, rpms goes up very slow. Yesterday I reset my ECU and everything was awesome, rpms goes up very fast and I felt like I have power again, it was for couple hours cause today again is worse. I really dont know what's going on, I changed spark plugs and it didn't help. I feel like sometimes is better sometimes worse, I think it started when I installed high flow cat. Now I already installed greddy turbo kit, exedy clutch, act prolite flywheel but still have the same problem. I also remember that CEL showed up some time ago and after 2 days disappeard. What do you think guys? Maybe sensor??? Im really tired about this, do you have idea what it might be???