I currently have AEM air intake. The filter is dry flow and time to replace them so I want go bigger filter. So I bought 6637 filter and today I took them off and try to reuse the intake pipe because it is polished and 4 inch diameter which is perfect but bad news is that the pipe is too long and I couldn't get the 6637 filter on. Anybody got advice? Im trying to reuse the pipe and save some money instead of buying some pipe to make it work. Thanks!