I run the plugs Dave sells. #7 summer plug. As for the pipe I have only ran the Radical pipe with 2 or 3 shims in it. Not sure what pipe is comparable to the Radical one. And for break-in.....???? There is a ton of ways! The one alot of guys are doing is Josh Cyrul's way. Lots of RPM'S and adjusting the High speed needle. Hope this helped.