^ Well Colombian heroin is also HCL so it doesn't smoke well either. Colombian and Asian dope are both very similar, and afaik, the only way to tell the difference is to have it analyzed, as the poppy from the different areas has a different alkaline ration. You wouldn't be able to tell the difference between the two any other way since they are both heroin #4, are the same color, and even if color was different the cuts added here would make it the same color.
I say that this is Colombian dope though because any reputable source shows that Colombia ships heroin to the east coast of the US, and there is only a very small percentage of Southeast Asian heroin in the US, and I believe that it isn't really on the east coast.