hi all, i recently noticed my car is having problems turning on. I feel a lack of power....i don't know if its the spark plugs, or the fact that i connected my system straight to the battery, or can it be something else? the car turns on but i just feel it struggling to do it. can it be the system.....do i need a capacitor?? help please.

thanks.

 

how old is the battery?

 

i dunno......i gotta check. i have not change it since i bought it (last october)