I installed an Invidia catback and an Alta cool air intake. The combination produces a crispy response, better performance and a great sound; however, as time is going by, the car has started to develop this vibration/resonance anoying rattle around 2,500 rpm not horrible or loud - just there. Has anyone noticed this resonance after the mods? The car just hit 50K miles and there was no resonance prior to the mods. Any suggestions?

 

I have 2 Invidias, one on an 03ms , and one on 05 mcsc, no resonance.Check the mounts and rubber donuts for breaks or interferance with other components.

 

I have oneball mod and im having a vibration at low rev. I still wondering what;s the cause, I think its my muffler but im not sure now..

 

Check mounts to make sure not broken and exhaust for interference .