[JoeWagon]

At least lie to me and say you searched but didn't find anything.

blow off valve is in the upper intercooler pipe near the throttle body elbow. it releases boost pressure when the throttle plate closes (when you let off the gas or shift) so that the pressure doesn't hurt the turbo.

wastegate is a valve, mounted in the turbo (internal gate) or on the o2 housing or exhaust manifold (external gate) so that when a certain pressure is reached at it's vacuum source (from boost controller), it opens a valve to redirect exhaust gases away from the turbine wheel, in turn stopping the force that spools up the turbo, and limits the boost of the turbo.