Thursday night I installed BR stage 2 & the mechanical CEL fix. Even though the car runs & idles just fine, ever since I have a lot of tapping coming from around the fuel injectors.

Any idea what it is about these mods that could either cause such a sound or make the injectors get louder? It is audible from in the car at idle, though not noticable unless you had the radio all the way down.

I know sometimes you dont notice sounds until after a mod, since youre alert for changes, but Im 99% sure this sound wasnt there before (or at least not as loud).