Ducati Monster Motorcycle Forum banner
1 - 1 of 1 Posts

· Registered
30 Posts
Discussion Starter · #1 ·
Hello all
I have joined this very informative forum to seek help. My wife says that I don't know much and should ask instead of assuming.
Here goes. I would like to increase the power of my S4. I already have the DP slipons, open airbox, and ECU. My big question is why is there more power with the full exhaust system as opposed to the half systems. I know that some say that it is the header than does the restricting. Could someone please explain to me what the sizes of pipes mean as far as power (42mm, 45mm, 50mm etc.)? I know that Strati is putting a ST4 header on his s4, but how can I keep what I have, and replace some pipes to get the horses up. Thanks for the help, as you know, I am a newbie
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.