Most of the time when I drop my car in to second gear around 4500 rpms I bog out a lot and I have a sohc zc non vtech what could be the problem? And I noticed after I used a fuel injector cleaner I started to bog more

 

is there any cel light

 

Any CEL's?

Have you done a recent tune up on the car? Spark plugs, Spark plug wires, Distributor Cap & Rotor, Fuel Filter?

 

What ecu is being used?

Have you checked the mechanical and ignition timing?