Non-Dyno Torque Table Tuning

Hello. Great lecture but I have a couple questions. Without starting with a pre tune (roush or others), after scaling both injectors and maf how would you go about getting initial torque numbers? I was hoping the road tune section would have touched on it but it did not. You stated that you initially get torque numbers from your dyno and then get the correction factor to populate the new graph. without a dyno would there be a way to make an educated guess? Thank you.