So on the early 80s turbo regals they ran a blow through q-jet, what was changed from the standard carb to be able to run it with the turbo.
I believe you are incorrect. The carb was mounted on the turbo. It was a "wet" turbo set up- the carb was mounted on the inlet side and was pulled through.
Ok, after further review they are draw through, but my original question applies anyway, is there any differences?
The turbo carb has the power valve/metering rod port routed thru a pevr valve. This keeps the mixture from going lean when the throttle is closed while engine is under boost. The pevr valve supplies vacuum to the power valve while under boost, enrichening the mixture. I don't know how the computer-controlled 81-up carbs handled that condition, likely did away with the perv valve and just did it electrically.
