I have never heard of that pipe from CPI and do not see any info on their website. Do you have any pics or additional info?I really liked my sparks tt pipe. When I first went with the 350pv that is what I ran. Then I ran across the CPI 800 bb pipe. So I bought one and what a difference. It didn't loose any bottom end but everywere else it pulls like a crazed ape. You can really tell when the pv opens and it gets on the pipe, since your arms are ripped out of their sockets.