1) I get vibration when starting up my car
2) When I let off gas while driving i get vibration
3) when i go over a hump in the road it does a quick vibrate when my shocks compress
4) i get a tapping noise near my feet when slightly letting off of the gas

also, when i rev my car after starting the car and like 20 mins after my rev is longer than its supposed to be...it doesn't just rev, it revs and slowly returns to idle. any idea what it is?

I'd say you definately need some polyurethane!

2 more good ways to find out is to drive the car leave it in 4 th gear or 5 th on the highway and punch the gas off and on. If the shifter rocks back and forth. You probably need mounts.
The next way is to have some one punch the gas with the car in nuetral and look at the motor motion. If it rocks back and fourth, you need mounts. Hope this helps some.

best way is to brake torque the car and look at the engine it should not move to a certain degree. or if you hear a knock when doing so you def need mounts

do u mean slightly or noticeably? mine jerks but not MAJORLY.

Even if they are good, the ES inserts are a good insurance policy against breakage in the future, plus they will restore broken OEM mounts to a much more solid engine mount. In other words, get the inserts. :D

should i get only the inserts or the whole mount and insert set?

ttt

also, when i rev my car after starting the car and like 20 mins after my rev is longer than its supposed to be...it doesn't just rev, it revs and slowly returns to idle. any idea what it is?