Just wondering if anyone has had this problem and if so, if they have come up with a solution:

I just did some work to my 2002 GS430 consisting mainly of srt intake w/ecu, trd lsd and srt torque converter. After getting the car back, anytime I drive 60mph or higher, the car shakes/vibrates. Its been like this only since I got the car back. I don't know if its coincidence and it could be a wheel balancing problem (I do have the 17 chromes) or if any of that work could have caused the problem. Any assistance would be greatly appreciated. Thanks.

 

Is it possible that whoever did the work might have smacked a curb or something while test driving the car? From your description it doesn't sound like any of the work would cause these symptoms.

 

bring it back... bring it back. My mom's car used to have that problem and the mechanic said the rims were bent inside, so they caused a vibration.

So many people have had that problem though, so it might not be your mechanic.

But again, bring it back.