I drive a 1990 CRX HF with a JDM B16 its been running fine up until about a week ago. I haven't changed anything and out of nowhere my car it starting to bog out. Pretty much it only happens when I'm doing just normal driving, when I get up to about 3000rmp's to 5000rpm's my car bog's, it doesn't want to accelerate normal unless I floor it. Because of this problem I have recently changed my spark plugs, wires, rotor, cap and fuel filter. But none of this helped. One person has suggested changing or upgrading my injectors, and another person has suggested a fuel pump regulator (to turn up the amount of fuel I am getting because maybe I not getting enough). Has anyone else had this problem or have any suggestions on what it might be, if so please help.

 

Is your ECU throwing any codes? Could very well be your O2 sensor, also.

 

https://honda-tech.com/zerothread?id=637661

Read about O2 sensor wiring..

 

where can I read about O2 sensors? And I dont want to sound like an idiot but I am just learning about this stuff so how do I read ECU code or where can I go to learn about it?