Your probably not going to notice any difference...A set of pipes have to be a certain diameter
off of the head..this is where it picks up it's horse power...they are designed to create a vacuum
called back pressure, or a lack of it..if it is the right size..
so that exhaust gas is not forced back into the head..the tail pipe has less to do with it..ever notice a dragster, there are no tail pipes, it really doesn't need it..just the right size pipes..am I right?
2004 Ultima 127 Chopper
1975 Harley Davidson Shovel head Chopper