Has anyone notice

[aucorium]

i notice a similar thing , my car felt like it was pulling really hard , it still does , although i do alot of rush hour traffic driving , i do hammer it when there isnt traffic , but somehow the car seems to have not as much punch, now im not sure if it is just my imagination , i mean if i floor first and grab at 2nd , she still spins into second , so im not sure if its in my mind or what. i have an exhaust on the car , well , 57mm from the middle resonator to the back with a megan racing rear muffler.

i did hit the rpm limiter by accident 2 nights ago , but i dont think that can cause any damage , i mean that why the limiter is there right ?

is there anything else that could be wrong ? or is it the ECU messing me around ?