From what I've seen, it's not so much of it takes turbo cars more power to run 13's compared to lower horsepower all motor cars, than a lot of turbo car owners don't set their car up for drag racing.

I took my NA hatch to the strip with 22" slicks, gutted, and a cold night for a reason... low power. I've seen a LOT of turbo guys go out on street tires, full weight, and high humidity/heat. However, Japan4racing had a stock GSR swap with a Peakboost turbo kit in a Civic that did DEEP 12's if not high 11's if I remember correctly.