I am about to flush my radiator and change my thermostat and my question is what is a throttle body bypass and should i do it.

 

You already posted about this... just wait... people will answer. And while your waiting, take a look at the sticky about TTT abuse.

 

What BLinindoll said.. I answered your post like 5 minutes after you posted this (EDIT: And, not because of this.. there were so many other posts I was busy reading, that I didn't even see this one until now [like an hour later!] -- THAT is why ttt is a BAD thing (tm)!).. you gotta have patience man! Checkout google and search old posts while you wait for an answer.. chances are, if its something simple, you might be able to find the answer elsewhere, on your own.

Edit2: Now get out there and do that TB bypass!