ORIGINAL: airraptor
not sure on the OS carb. I just open up the stock carb. Some of the stock carbs can be opened up a lot others cant. If i get another one i will try another carb just to see what the carb swap will offer but to me a 1,000 seems like a very large gain but the engine is a torqer so the small carb may play in to that.
The Italian mag carb is roughly 9.3mm and the ASP 108 carb is about 11mm. The G90's gain 1k on the 108 carb, so the S90 should do that or better. The S90 is stronger than the G90's from all I've read.