I noticed my FA5 from the start is harder to start then my old EP3. Like the EP3 would fire right up but the FA5 takes like an extra second to come to life. The OEM battery is weak but if you have a system in your car then it may have drained the life out of it. I would take it somewhere & get it tested before replacing it. What mods do you have on your 8th?
try and find what the amperage ratings are on the stock alternator.... did u do a wire upgrade and or grounding kit?? try that and a new battery first and then look into a higher output alternator..... if ur sure thats even the problem
intake, exhaust, header, hondata, etc. I'm going to have them check the output of the battery at a local auto store and then think about purchasing a new battery. It did get drained one night due to a dome light on.