Just had my Eibach sportline springs installed yesterday on my FA5, along with some fogs. Great drop (1.4")-- very noticeable. Great ride comfortability-- somewhat similar to stock. Eventually going to pick up Skunk2 rear camberkits.

Well my question is, I was driving without any problems or noises in my hometown, but as soon as I hit the I-10W , I noticed a rattling noise coming from the front of my car. I know it isn't like a loose front license plate; (removed). I don't believe it's my HFP front-lip I have that installed for about 5 months, no problems. It isn't my Eibach springs because I have been trying to let them settle and what not and roads in my hometown are pretty great. No squeaking or rubbing. And the noise is just from the front.

It leaves me with the possbility, could it be my fogs or perhaps the wind? LOL. It was windy as heck yesterday on the I-10. All my parts have been installed professionally(HONDA DEALER) Any idea where that noise could be coming from?

 

Drive it up on ramps and give a good look-over (i.e. bolts, nuts, splash-guards, headlights, etc). Look over all the parts that were likely removed during the suspension work closely.

I once had a "professional" tire job done. They didn't bother torquing my lug-nuts.

 

I had a rattle up front, after I re-installed a piece of my grill incorrectly.

The base front grille (#71121-snx-a00za) is about 2 feet long and it has the 'SI' logo attached to its driver's side.

The base front grille should tuck under the front bumper's top edge.

As I drove on to the expressway, the wind was able to get between the top of the bumper and the bottom of this piece.

I reinstalled it and no more high speed rattle.

 

UPDATE: Thank you safedriver!!! My problem was exactly what you said. All fixed.