Wow. Well forced induction is as the name sounds, forcing compressed air into the engine so it can burn more fuel (more importantly produce more power) either through a supercharger or turbocharger system.
Porting is altering the size or geometry of the throttle body by drilling, reaming, grinding, Etc. then polishing it to a smooth finish to reduce air friction.
There are companies/individuals out there that take a stock TB say from our mustang which is I think 60mm and will enlarge the diameter to 65-68mm and polish it to acheive performance close to that of an after market 70mm TB at a fraction if the price.
Correct me if I'm wrong. I don't claim to be a knowitall
Wowww it seems like u know everything and it sounds right, i would just buy the 70 mm throttle bodies cos i think from where i came from i dont think people here are big in mustang and supercharger. But thanks for the info appreciate it..