Well so far we have not had any problems with the stock pipes. We did have a customer try a dynoport pipe and it fell apart, so he went back to the stock pipe and all is good so far.
Highvoltage, i have read your thread, and I noticed you had your pipe welded to the turbo pipe. we ran into a problem on the cats when we were welding the pipe to the turbo pipe, it would cause things like the y-pipes to break and other problems. I am not saying that this is what caused your pipe to fail, but I am pretty sure it never helped things. All our setups run some sort of flex dampner between the pipe and the turbo, to isolate the vibrations and jarring .The other thing I found that will cause all kinds of problems, is the actual tune of the machine, if things are out of tune, it will cause all kinds of problems. I am going to test the pipe setup without the stinger, asi would like to eliminate anything that can cause my customers problems, but I would refrain from reccomending the mod until testing is done, as it will effect tuning and may cause new bigger problems. time will tell which is best.
We have found that the stock reeds hold up well, but we are working with Boyesen and hopefully they will get us something even better .
Jeff