I have never seen one of Franks pipes, but I can say he has been on the phone with me more than a few times about the issues. He really expressed an interest in getting it right on his pipes. The ones I mentioned I have first hand experience with not working worth a damn. Others I have only heard from customers about issues with them and seen pictures. Its sad that these people are not willing to spend the time to see if what they produce even works right before letting it out the door. Most choose to ignore it and blame someone or something else for there problems. If I bothered to save all of the pictures of pipes rubbing, O2's that will not work right and plating falling off the pipe most of you would $hit your pants.
One of the ones I mentioned sold the customer the full boat, pipe, mufflers, A/C and tuner. For a year the customer did everything he was told and even bought more product trying to solve the issues. Then was told its not covered and the tuning must have been done wrong, and they supplied the damn tuning! Pipe rubbed the brake lever and plating fell off, bike ran hot. Which was just why he started down the road with them in the first place. Finally took the bike to someone else who had to dent the pipe to make it clear then tuned it properly, problems solved.