aNtHoNyNoZ

iTrader: (3)

The car shakes every 30seconds or so
Rpms jump from 750ish to 500 too 1100
When your on the highway it hesitates at around 4 and a half rpms
We have a fujita CAI and that's the only mods
The radiator shakes along with the motor when we top the hood ,tried resetting the battery and unplugging the maf nothing,throttle body is clean etc
Any input would be appreciated thanks in advance.

NiZMo1o1

iTrader: (45)

sounds like you have two differnt issues ,

major vaccum leak..

and bad motor mounts.

aNtHoNyNoZ

iTrader: (3)

Would the motor mounts cause a change in the rpms?

NiZMo1o1

iTrader: (45)

no but a vaccum leak, bad MAF , exhuast leak would make the RPM flux

RAZ76

iTrader: (8)

If the car in your sig is your car, then it's a 6th gen, not a 6.5.

jaywills1020

im just spit balling but what about the catalytic convertor? does it bog down a little when accelerate? almost like the feeling of it starting in a higher gear?

revvinMAXto11

what everyone else said, vaccume leak OR MAF, and broken motor mounts.

if you have broken motor mounts you need to get them replaced asap.. depending on which one, you could have a SERIOUS mishap. ie, the lower right motor mount will cause your radiator to come lose and drop and depending on how fast your going or how high the bump is it will literally rip it out from your car and **** up everything along the way. you basically limping your max everywhere it goes right now...