Got_Boost02 - The insert plug doesn't stick into the hose, it sticks out of it. The radiator hose slides over the ribbed part, know what I mean? It might stick a few millimeters into the pipe, but I doubt it restricts much of anything. Let's just say I'm sure it's not the bottleneck in the system. The stock pipes suck enough on their own to claim that honor.
I'll go to Lowe's tonight and get a couple more washers to show you all what I'm talking about. I'll mock up the assembly since most people seem confused by it. I'll look into getting a better microphone too. 505zoom, does your camera have a microphone input in it somewhere?
Thanks all! I'm glad people are receptive and not critical of an uber-cheap design like this. I don't think things have to be unreasonably expensive to work well.