+1
Umm.. yeah. An Accord faster than everyone else or other Accords? There would definitely be a difference.
Accords have an awesome platform to work with but it's an all or nothing type of thing. You would probably be looking at $1500-$2000 minimum to even begin to get started and get any sort of real "power" increase out of an Accord. But you can start with some basics like intake, cat. back, header. And we're talking about doing things right, not just slapping on a turbo or a nitrous kit and then talking smack about how bad your Accord is.
Did you mean bigger fuel injectors to go along with your bigger throttle body or did you actually mean fuel injector fluid? If so, what is fluid going to do to make you faster? And valve covers? I'm sorry. That has to do with looks and not anything to do with power, and there's not point even for the sake of looks.
Before you go suppin' up your Accord... Take a smart approach and look at what you can do to get the most HP for the buck. If you're going to have to spend $2000 to get a 20 HP increase, is it really worth it type of thing... And do it right, not half-assed.
I would probably go talk to someone professional like with Greddy or DC Sports to start learning what you can do if you're going to take on the Accord project, someone that has really dealt with Hondas.
Planning ahead you'll want/need better suspension for sure and better rubber on the corners too, maybe even better brakes at some point.
But again, we're talking about doing things proper and not just slapping crap on there to say you've got it. Anyone can be a poser.