I had new 2.5 inch exaust put on about a week ago everything was fine, last nite i put a new energy suspension motor mount in the driver side , went to work this morning car started shaking , exaust started rattling under the e-brake , on my way home from work every time i stop it just shakes the steering wheel and the whole car. so i pulled my denso plugs out that i put in about two weeks ago and they are clean , checked timing ,right on the money, looked for a vac. leak notta'. no cels just a vibration, I kinda think it could be this 2.5 inch exaust laying on the body , any sugg. would be app.
list of mods;
jdm zc d16
aem intake
aem fpr
aem fuel rail
denso plugs
9 mm plug wires
2.5" exaust (shitty)
strait thru muff. (shitty)

 

ES bushing will cause the car to vibrate more. that might be what you feel. if its the exhaust you would hear it more than feel it.

 

You are suppose to replace motor mounts as a set, not just one at a time.

 

i did do all of the motor mounts I just lacked that one, i did see that the exaust is laying against the tunnel where the shift linkage is, i dont know. it does it and then after i run it for a while it stops???? WTF