I can tell you this. I put my Power Chamber intake on my buddy's LSV and he took it off after about a week. It may be because it wasn't dyno tuned with that intake but he could tell a difference under 3k RPM with that intake over his #1 intake. He took it off because it was made a negative difference in power under 3k.

Just a thought though. Skunk2 now makes a Black Series IM that is made only for the GSR at the moment. May want to look into that and if the PW Power Chamber is something you really want, let me know since I have one and I may let it go for a good price.