2slow, you are very defensive and attack my personal life. Why? I was merely making a comment about how innocent offhanded comments oftentimes lead to a thread getting dragged off-topic, by virtue of strangers reading them and making judgement. I meant you and everyone else no ill will. As for myself, I am newly married, consequently have no children as of yet, and do not neglect my wife and home. That, however, is not the subject of this forum, and I will spend no more time on it.

On another note, regarding pipes. In addition to the unnecessary complexity and noise increase mentioned previously, some(not all) tuned pipes sacrifice performance over a sometimes large portion of the rev range in exchange for a gain on top end. Not ideal for a trainer, unless you want to either practice deadsticks or see how quickly you can overstress the airframe. So, in the future, if you do choose a tuned pipe, look for people who have had experience with the particular model that interests you.