Don't really know what's causing the problem but my civic somewhat bogs in the lower rpms in first and second gear. At first i thought it was the an exhaust leak i had. Replaced the entire exhaust and it somewhat helped but it stills bogs a little. Any ideas as to what it could be. Is it the fuel injectors (24 year old car), cap and rotor, plugs, or bad grounds. Any help would be appreciated.

 

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Does it bog at idle? Could possibly be your PVC valve, they are only a few bucks at O'rileys. If it bogs while in gear though I think it may be fuel related..