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Specific jetting question for my 7R

1025 Views 8 Replies 6 Participants Last post by  jeeps84
I have searched past threads but didn't find anything that specifically answered my question. I have found through various sources that the 7R actually runs rich from the factory instead of the typical lean condition of most sportbikes. How rich, I have no idea but I do know that my 7R will backfire (blue flame out the can) after sitting during high humidity. Now, it is said that adding an aftermarket slip-on, bolt-on, or full exhaust will lean the bike (severity based on type/style/manufacturer). My 7R has a Yosh RS-3 bolt-on.

I was planning on buying a stage 1 jet kit over the winter but what purpose would it serve if I am already running more fuel than air? I am assuming that the purpose of a jet kit is to utilize larger jets (not smaller) forcing more fuel through the carbs to richen a lean condition. Can you go with smaller jets to lean a rich condition? Is it better to adjust the factory jets? I am not sure what I am going to do but I want to fix this over the winter. I am also entertaining the idea of a full (Akra) system with new jetting.
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It's the popping on deceleration which is pretty noticeable (second gear only) and then the pop during start-up. I'll be pulling the tank as well as all plastics in a few weeks or so as my bike will be painted over the winter. I'll pull the plugs at that time and take pictures of each. I'll update this thread accordingly. I was planning on going with the Factory stage 1 jet kit as I have read it is easier to install than the Dynojet.
Spark Plugs Pics Added

I pulled my plugs this past weekend and all look the same. Take a look at the pics and tell me what you think. The pics were taken with my phone so the quality isn't great. There's no oil but the plugs are dark from carbon. It looks to me that my bike is indeed running rich but I'd like some more opinions.
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