What went wrong here?

[BYprodriver]

I did not watch the video but sounds like you upset the balance of the car mid-turn. If downshift to a lower gear that excessively raises rpms when you reengage the clutch, it's known as "engine braking" & has same effect as pulling the hand parking brake.
As you prepare to enter a turn complete all braking & shifting while the car & steering wheel are pointing straight. This allows you to go slower into the turn & faster out, which is the fastest overall strategy & incidentally safer if that's important to you.Get you & your Box out to a autocross where you can practice car control while only risking killing some cones. Boxster is one of the best street vehicles ever made to do what you direct it to do. Unfortunately if you give the wrong directions it follows those also without prejudice.

[san rensho]

Originally Posted by BYprodriver

I did not watch the video but sounds like you upset the balance of the car mid-turn. If downshift to a lower gear that excessively raises rpms when you reengage the clutch, it's known as "engine braking" & has same effect as pulling the hand parking brake.
As you prepare to enter a turn complete all braking & shifting while the car & steering wheel are pointing straight. This allows you to go slower into the turn & faster out, which is the fastest overall strategy & incidentally safer if that's important to you.Get you & your Box out to a autocross where you can practice car control while only risking killing some cones. Boxster is one of the best street vehicles ever made to do what you direct it to do. Unfortunately if you give the wrong directions it follows those also without prejudice.

In addition to the good advice a bout about braking and downshifting before the corner, you have tu understand WHERE in a turn you can apply hard throttle.

Every turn consists of two phases, the first, when you turn the steering wheel in and the second when you unwind thenwheel the wheel back to center. Any hard application of throttle as you are turning in and you will spin. That's what you see most of the guys in the video doing.

Now, as you start to turn the wheel back to center you can apply increasing amounts of throttle all the way to full throttLe, as you come closer and closer to getting the steering wheel back to center.

Try this. Go to a safe parking lot on a wet or snowy day and as you make a slow speed turn, around 25-30 mph, hit the gas hard as you turn the wheel. You will spin. Do the same turn but this time, wait until you are unwinding the wheel and progressivel hit the gas hard as you keep unwinding the wheel. The rear tires will spin up but the car will not spin, ,you will exit the corner with the car perfectly straight, in control and the whole maneuver should not should not induce panic at all, in fact, once you get the hang of it, it's a blast. Be safe.