Do the X50 cars use the same high flow fuel pump that the GT2 has?

[Dus10R]

Just wondering... someone was telling me that the stock TT's fuel system was pretty much maxed out after a ECU tune and even then they are only getting the AFR's to around 12.5 under full boost. I know 12.5 makes the most power but that's only if you're running high octane fuel or a methanol/water injection system...otherwise turbo cars usually run safely in the 10's and 11's AFR's. I know that normally one of the first steps in tuning a turbo car is to change over to a higher flow fuel pump so as to lower some of the injector duty cycle, but I rarely ever see anybody talk about doing that when modifying Turbo's. I know the GT2 has a higher flow pump, and so I was wondering if the X50's did also because they're running the same turbo's. Do the TT's have a built in knock sensor that can be read when programming an ECU on a dyno? I realize they aren't making much boost but on 91 octane at 12.5 afr on full boost I'm curious what the knock count is.

[Loren]

The parts list only shows the high flow pump for the GT2. But the GT2 also has a different fuel tank (no 4WD) - so I don't know if that would make any difference.