I don't know if that's the right word but, what the hell.

I have a 5 speed car and the problem is everytime it reaches 2000 to 2500 rpm, my car starts to spotter. My car shakes or rumbles a little bit everytime it happens.

It happens to all the gears from 1 to 5, when i have the gas on steady between 2000 to 2500 rpm.

I thought it just need a tune up, i did a complete tune up spark plugs, wires,caps, rotor and oil change and new K&N air filter but it's still doing the same thing.

It sounds like it's coming from the intake i think, not really sure.

I need help with my car i don't know what the hell is wrong with it.

Anyone had this problem before? If you do please tell me what to do. Hopefully what i'm telling you guys make sense. So please help.