Assuming it didn't shake before, whoever tuned it up goofed somehow. So, pull the spark plugs and check to see if they're the correct ones and properly gapped. Also, check to see if the spark plug wires are installed properly. If all checks out, whoever tuned it up has done something to cause the car to run bad. Impossible to guess what.
Re-read your question. What are you asking?
There are many things that can cause a rough idle on this car. The computer could be going out, the engine may not have enough oil, and the engine may not be getting enough fuel or electricity.
THe search engine cannot be installed only visited by going to google.com
The engine thermostat, on a 2008 Chevy Impala 3.5 V6, is located on the lower front side of the engine. The thermostat will have a water hose going into the top of it.
A motorcycle engine is 150cc. This size engine is going to be installed on a small motorcycle, probably an off road bike that has a top speed of about 35 mph.
There are many reasons why an engine will sputter when revved. There may not be enough fuel getting to the engine, there may not be enough electricity getting through the car, or the computer could be going out.
It's not going to happen, sorry. You could try it, but expect it to fail.
There can be many reasons why a persons vehicle shakes. The computer could be going bad, the engine mounts could be going out, there may not be enough gas or electricity getting to the engine.
Looking at the engine and going left to right, the back cylinders are 1-3-5 and the front are 2-4-6
make sure you have the right size 12volt battery. alt keeps going bad are you bumpin in the trunk?are you sure alt. is installed properly and connection are tight and secure??....
Going in the direction of flow
If your Impala jerks while going up hills, it could be low on transmission fluid. If it does not do it on level ground, check the fluid and replace the filter.