[lawdogg]

The only way to make a statistically accurate comparison is to sample the population of 13g applications and sample the population of 13t applications, and then compare your bell curves.

There are so many variables when comparing two different turbos at the same pressure. Temperature, air density, heat soak'd intercoolers, timing advance, skill of driver, hell even headwind vs. tailwind will alter the results of such a comparison.

If we can use this thread as home base to gather #'s for the population comparison, sure. But finding two different cars holding the exact same boost through the RPM range, shifting at the exact same points, with the exact same 60's and exact same AFR's and timing advance through the ENTIRE run, except one is running 13g's and the other 13t's is not something I ever see happening.