Exhaust/Header Questions...

[Sharp shooter]

As some of you know, I am not too mechanically inclined and had a questions regarding differences between these two types of headers.

Currently I have this type of set up. (not my boat, just an example)


Was wondering if there is a performance difference going to this type of set up or is it just for aesthetics?


Main reason for asking.
Last time I had my boat out, once in a while when I gave it gas, it would studder and take a while to get going (not all the time, just sometimes)
Someone told me that the boat is burning too rich and I should take my engine cover off.
When I see other jet boats out there with the engine cover off, I see the headers over the stern.
Was wondering if I would have to put these on if I took the cover off.
If so, is there a performance difference.
I have a 19.5ft jet boat with a 454.

With my limited mechanical knowledge, I hope my question makes sense. lol
Thanks in advance guys.

First off, these are not "headers".


Headers allow an engine to push out the exhaust gas easier making for more efficiency. With a stock engine they won't help all that much (if at all).

You need to take your boat to a pro and have it tuned. Lack of headers aren't your problem. If your engine is of the high performance variety, headers will allow it to work better.