Fell down the rabbit hole thinking to improve my bodged mufflers and read 113 pages of the show us your muffler mods thread before I came back here to necro this thread with some queries. This is the link as it covers a lot that could be put in this thread:
https://opeforum.com/threads/show-off-your-muffler-mods.6898/
When doing a pipe outlet does having the pipe extend into the can rather than cutting and mounting it flush like a deflector make a difference?
80% of exhaust - 125% of exhaust port at the exit of the cylinder for exit seemed to be mentioned as a safe bet - would that be as measured around the circumference on the skirt of piston / cylinder wall or flat as seen peeking down the port?
When doing deflectors does placement - ie top / side / more towards front or rear make a difference?
Is there a tangible difference between pipe and deflector apart from looks or possibly pipes having better directional control of exhaust flow?