Speed limiter should have been removed in the IPF tune supplied when the supercharger kit was installed, so I don't understand that part.
And could you explain what the idea is with doing this, please? Are you taking a LFX-equipped, IPF-S/C'd car with their tune, then loading your own tune and comparing it? I assume that's what's being done, but you're leaving some details out.
12 LS M6, IPF S/C, ASA GT-5 wheels, VMax PTB
1995 Mitsubishi Montero SR
1987 Dodge Raider Turbo Project
1986 Mitsubishi Montero 2.4l FI Transplant