Good info, but I didn't think anyone was "killing you" - you clearly have experience and have done some testing, cool. That's the point of the thread isn't it? For folks that don't know to learn and ask questions?Times will absolutely be better, but on a non-PP car, you will overheat the fronts, so they're better for a few laps then the car starts understeering and brakes get soft.
You guys kill me. As far as I know, I'm the only one in this thread that has tracked both a non-PP mk7.5 and a PP mk7.5. I'm telling all of you, that xds will overheat on brakes on 200tw tires on any track that's demanding on brakes. I'm not an expert or professional driver, but I'm telling you my experience with my non-PP GTI, which I still own, and my PP GTI.
I wouldn't turn xds off on a street car for either a non-PP or a PP, or a track driven car with a LSD, but controlling the brake heat generated on track with a non-PP brakes out weighs the benefits of xds on a non-PP car. I grew up at the track, both parents autocrossed and club raced. I raced carts as a kid, autocrossed and tracked my whole life and have never seen any car heat up the brakes, hub, wheels, tires as bad as my non-PP GTI, except the FiST that melted a brake piston the same day. I stopped tracking the non-PP car that day due to concern of causing damage to the wheel bearings from that kind of heat. The only other GTI at Daytona last fall was a non-PP and went home after the first session due to brakes overheating. He didn't listen to me about turning xds off and had almost complete brake failure going into the bus stop 15 minutes in. In the months after that, I autocrossed the car and tested with xds on and off. The difference in front tire and brake heat is massive with it on and off. The car will absolutely intersteer more and you'll need to be a little easier on the throttle pedal on corner exit, but ON TRACK, by lap 3, you will be better off with xds off. Since then, I've done the same tests with my PP car, and xds on or off has no perceivable affect on brake temp or tire temps in autocross or tracking.
If you're going to track a non-PP car longterm, LSD and front brakes are necessities. Until then, turn xds off for your safety and the longevity of you pads, rotors, tires, and bearings.