Ed,
New to the hobby, I am always willing to accept new concepts and ideas. Some I can see some reasoning and others I need a little more explaination. And I am not "arguing" Ed, but wish to know how breaking in a new engine with a stock muffler by the manufacturers reconmendation can ruin an engine when one then installs a pipe? Thanks for your help.

Quote:

"However I must prevent you from destroying your engine, which you surely will if you follow the instructions so far given"