car starts and idles fine when i drive it the rpms go up but the car dosent go very well, does have something to do with lack of back pressure because its runnin open header, or bad plugs n wires? i need help asap

 

that picture is missing something. o wait its the ej and the da

 

dont croud my post. lol.

btw i think it may just be the clutch not fulling disengauging