I notice now that the car is quieter now (thank god for catalytic converters) when I am accelerating, driving around, a hear a squeaking / rattling type sound....
Its not the brakes, it happens during acceleration... I also don't think its the engine mounts because I get absolutely no vibration in the shifter.
I suppose it could be body mounts going bad but i'm not sure... Before I just take it in to a dealer and see if they will diagnose, any thoughts on what this might be or if anyone else has experienced the same thing?
Its a 2011 R3. Thanks.

 

Belts? Brakes?

 

What kind of catalytic converter and mid-pipe are you using?

If it's not mounted properly, it could rattle sometimes. Mine is doing that, actually. Just need to find some time to go and fix it.

 

I just recently had the BHR midpipe with the cat installed by a reputable shop in my area....
interesting... i guess I need to take a second look at that

 

Yep. If the exhaust is not adjusted properly, it can rattle against a few things on the undercarriage--especially in S2 cars.

There is also a heat shield bolt (or 3) that likes to work loose and fall out, which causes the heat shield to vibrate at a fairly high pitch.