991 Porsche 911 Turbo S with Bolt-Ons Drag Races 997 Turbo S with Custom Turbos

We're talking about a 991.1 incarnation of the Turbo S, which dukes it out with the 997.1 model. Nevertheless, there's no point in talking about the standard output of the supercars, since both have been taken far from the factory setup.

When it comes to the competition of the most modded car, the 997 Neunelfer takes the win, since the flat-six motor of the thing now packs a twin GT30R turbos, while running on pump gas.

As for the newer Zuffenhausen animal, this packs a respectable amount of bolt-ons, while also running on pump gas.

Nevertheless, the transmission department brings an important gap between the two all-wheel-drive beasts. To be more precise, while the 991 boasts a PDK double-clutch tranny (the model wasn't offered with three pedals, the 997 comes with a six-speed stick shift.

Now, given how difficult it can be to launch such a machine, you would expect the two to go for a rolling start. Nevertheless, this wasn't the case, with the Porscha drivers going for a standing take-off.

In fact, the two rear-engined animals used the stoplights as a way to kick off the battle. And, to make sure the conclusion was relevant, they raced on two separate occasions.

The velocity gathering took place on the streets of Mexico, so the guys behind the wheel weren't exactly worried when it came to stuff taking place outside their cars.

Both Porsches were cast in the role of the camera car, so you'll be able to get a good taste of the sprinting action.