my crx si has a 95 vtec motor with 88 si intake manifold and distributor the problem is the car wont rev pass 3000 rpms what could it be?

 

You are caught in limp mode.

 

waht you mean

 

Back from the dead:

Limp mode is the "safe" program inside the engine computer. If any of the sensor circuits show a failure the engine computer will go into limp mode. Which runs the car at a very crappy tune(relative to performance), until the circuit error is corrected.

Basicly, if the computer sees a problem with the engine controls, you get the malfunction indicator lamp and the car looses performance.

 

It's basically so you can drive the thing to get it fixed. Like a garage, or home, or Honda, or the scrap yard. It's really your pick of where to go.

When I first did my swap I was caught in limp mode, but it got fixed.