Okay, so I got my mrev+ and 5/16 spacer installed last week (and I had Kinetix HFC's installed about two weeks before that), and the strangest thing is happening. Whenever I go over a speedbump, or I'm going up an incline where the road is bumpy, it feels like something is grinding against the bottom of my car. This only started happening after my mrev+ and 5/16 spacer install.
It feels like its directly under me. My first thought was that maybe the HFC's were grinding against the ground, but I checked underneath the car, and there is NOTHING that could be low enough to. This is really bothering me though, because it feels like the car is being damaged..
Any ideas? I'm going to take the car down to the local shop who installed the plenum mods, see what they think, but until then, trying to get some advice..

 

If anything is grinding on the ground, you will see scrape marks on whatever is dragging.

 

Well, yes, but I can't see anything. Basically, it seems as if nothing is dragging on the ground, and that maybe something else is causing it to feel like that. I think I'll have to get the shop to check it out though.

 

kinetix hfc are notorious for hitting the heat shields or underbody of the car. nothing a little focused hammering won't cure.

 

Maybe strut bar rubbing against hood?

 

if he feels it directly under him, its prolly the cats. maybe the extra air flowing thru the plenum is vibrating the cats more than usual.

 

i once got a piece of tree stuck under there and i suffered the same problem lol.

 

also if they or anyone messed with the black plastic cover that goes under the engine and all the bolts didnt get put back in, well when you drive it will come down and scrape stuff but when you stay still, then it stays up mostly...


i would check that plastic cover, does it sounds like plastic or metal scraping, they make two totally different sounds.

 

Feels like metal scraping. It feels like the cats or something is hitting the, but that seems impossible based on how high up they are from the ground (I'm not lowered at all).

 

Something caught in the dust shields behind the brake rotors?