I have evo x and I was under full throttle in 2nd gear and suddenly I lost the power. I thought I hit the rev limiter but no I was around 6k rpms. After that it seems the car is really sluggish (probably safe mode). Next day everything was fine and the turbo was engaging around 3k rpm as it was supposed to. I went to a mechanic and he found two codes: p-0123 and p-1233 both connected with the throttle body. Since then (few weeks) I didn't have any problems but I wasn't pushing it either and I don't like to have an option to push it when I want to. What should I do?

 

Check for boost leaks. Have you changed your fuel pump relays?

 

Also check the A/F ratios