I have a 1996 nissian maxima automatic v6 and it will not rev past 2500 rpms. Changed fuel filter and injector

any help would be appreciated.|||Rev limited at 2500 rpm? Ninja please. the most likely cause is the catalytic converter is restricted. Since air can%26#039;t get out of the engine, air can%26#039;t get in and it will only accelerate to the point where the exhaust back pressure overcomes the intake air charge. It could also be the fuel pump has insufficient pressure/volume. I have also seen ignition control modules cause an engine to not rev past a certain point.|||ever been tuned? if over 100K it sure needes it...check tranny fluid|||What kind of sound does the engine have when it hits 2500 rpms? Have you EVER heard it go above 2500 rpms? It may have a manufacturer%26#039;s built-in rpm limit device.