Drz400 exhaust swap

2002 suzuki drz400s. I just bought an older big gun race exhaust system on ebay, trying to find out where to jet the carb at? It is a stock 2002 suzuki drz400, no mods beside simple bolt on, stock airbox, stock cams, stock gearing, no engine work. I was told by big gun to go up 1 main jet size, & go 1/4- 1/2 fuel screw turn. Does sound about right?

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Yes.

 

I think that will get you close.

Cool thank you.

Edited by dan707

Oh yeah also my elevation is at 1355 or so.

I'm at 110". but we get up to 2,500 quite regularly.

 

 

EDIT: 110 feet, not 110 inches, but I think the jetting would still be in! :lol:

Edited by Bermudacat

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