Verified answer

put candy in it

You don't. At least not easily.

The fuel air mixture is maintained by the engine management computer based on information from various sensors located in the engine compartment. It then uses this data to set the fuel air mixture using a pre-programmed curve by varying the pulse width and time of the fuel injectors.

On a stock engine there is no need to adjust the fuel / air mixture. The engine management computer can do a much better job than you could.

If your engine is stock and you suspect the fuel air mixture is incorrect look to other problems under the hood. Usually a sensor sending bad information to the computer. Items like a bad oxygen sensor, air intake temperature sensor, throttle position sensor, etc.

You don't need to start making changes to the fuel air mixture unless you have made some serious engine modifications. The usual cold air intake and muffler changes don't count. I talking about changes like racing pistons, racing cams, larger valves, port work, intake manifold, supercharger, turbocharger, etc. If you have these modifications you would start by adding larger fuel injectors. Then change the computer programming to change the pulse width of the injectors to make them stay open longer and deliver more fuel.

More air or more fuel?!!?

If you want more oxygen uptake then you need a supercharger. Turbochargers work by condensing the fuel/air mixture which is different from a supercharger that forces air induction.

Based on what you asked, you would want a supercharger.

Why would you try to increase the power of your honda civic when its meant to be a fuel efficient vehicle? I have no idea but if thats what you are going for then its your money.

treat ur self to a new car

buy a new car

get nitro!!!!!!