Johnson 9.9 four stroke performance upgrade?

BIGGUN

Seaman Apprentice
Joined
Jun 16, 2005
Messages
35
I just got a Johnson 9.9 four stroke engine. It was made in August 1997, so I assume it it a '97 not a '98.

I was wondering what if anything could be done to get the most performance out of it as possible. Are there any carb upgrades or exhaust mods? Any timing changes? I have it on an aluminum 17' center console so it moves it kind of slowly. Any increase at all would be great.

Thanks,
Kevin
 
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