Originally Posted by Black-RST
ah that’s off a audi he said they are supposed to be better than the rs turbo standard units
In most cases - no! The geometry of the funnel, the diameter of the plate, the metering unit itself - everything is made to fit the specific engine. Just because the Audi might have more engine capacity or more horsepower - metering unit (parts) are not automatically "better".
Same with 105 hp XR3i <-> 130 hp Golf GTI MK2 metering units!