I am looking to change pipes. Have the THS right now,but looking for another pipe(THS just feels used up,doesnt feel like I am getting the performance I used to out of it). I have been looking at Tsais pipe. Has anyone used these pipes before? Either on a Revo or other truck? I am looking for info about the Revo performance,but any info about these pipes will help seeing they also have truggy pipes too.

http://tsais.com/products/exhaust/index.html