[Tjaen6]

So I have a 2014 Scion FRS . The engine blew and I engines swapped it with a 2013 engine . After all is said and done I’ve been doing some test driving and I receive a very sluggish throttle response at 3k RPMs . Not the usual issue for lack of hp. It’s more like I hit the gas’s ans the Rpms will rise past 3k with no gain in speed and drop back down to 3k and then go. It’s like a “sluggish” response . I’m going to take it to a shop to have it looked at but my thought is that maybe it has something to do with tuning or transmission .

Any thoughts ? Car has no other modifications other than 2013 engine swap(10k Miles) and a cam plate for that oil leak a few of us has dealt with .