I read people say to get a tune after they have got their converter or other mods, installed in thier car. But when you speak of a tune, do you mean a tune-up or tune the pcm for the extra power, shifts, etc? Thanks, in advance.

 

tune the pcm to eliminate any driveablity issues (tc lockup, torque management, cel's caused etc...)

 

That depends. After something like gears/converter it is as stated above...lockup, TM, shift points, etc. A REAL tune, though, is a full on dyno tune. A dyno tune included all the little changes as well as adjustment of such things as the air-fuel ration and timing. To realize the power potential of major mods (headers, CAM, heads, etc) it is necessary to have the car tuned. For cams, it is sometimes a must in order for the car to even be driveable.