really bad vibration

[gsxspeedlab]

my engine vibrates really bad from 4k to 7k rpm. it's really loud and seems to be more intense(by touch) by the throttle body and intake manifold. i took the EGR valve off and looked at it. it has a lot of build up in it. and my car is throwing an EGR code, but can that make that much vibration? thanks in advance.

 

[gsxspeedlab]

i got rid of the car about 2 weeks ago. it crankwalked.

 

[laserspeeddemon]

i'm still betting your vibration problem is the balance shafts. most mechanics don't want to be "showed up" by their customers so they'll just say they know what they're doing and that they already checked that even if they didn't. there's nothing else it could really be except bad timing (the car would run shitty too though) or balance shafts. this might be something you have to fix on your own.

I'm betting he got this problem resolved since it was posted about 6 months ago