Sorry if this has been talked about before , I did check the forums didnt find the exact answer, so here it goes. I have a 1997 600 Kat. it has the duals on it. I want to put on a 1998 4-1 exhaust. I know about the oil pan and pick-up. What i want to know is will i have to rejet it? The exhaust i want to put on (the 4-1 ) is stock. any help would be great!
![023.gif](https://katriders.com/core/images/smilies/023.gif)
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