Dyno Run Complete, Need tuning help.
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Dyno Run Complete, Need tuning help.
I got frustrated trying to tune my bike with the V&H supersport full system. I took it to the dyno to get a A/F sniff. What I notice when jetting is smaller jets like dynojet 122 didn’t give me as much pull as a dynjet 134. With a DJ134 jet it will power wheelie like crazy and feels great from 7-11K, but it will not run past 12K because it so rich. With the 122 or the 126 Jet it doesn’t power wheelie all that much, doesn’t feel nearly as fast, but it runs to redline just fine. They dyno confirmed what I thought. This dyno was done with the DJ122 jet and needle set very rich (3 clip up from the bottom). As you can see I have a huge lean spot from 7K to just past 10K. This explains why the larger jet ran so nice from 7-10K, but couldn’t run past 12K.
How in the heck can I add more fuel from 7-10K with out making it richer on the top end? I have tried this jet with a higher needle and it just makes 7-10K leaner. I am already to rich from 4-6K. I would really like some expert advice. Thanks!
Pink line on the Graph is A/F
[IMG]local://upfiles/22352/3D952F6DE83C4D0291371D44B9D4C938.jpg[/IMG]
How in the heck can I add more fuel from 7-10K with out making it richer on the top end? I have tried this jet with a higher needle and it just makes 7-10K leaner. I am already to rich from 4-6K. I would really like some expert advice. Thanks!
Pink line on the Graph is A/F
[IMG]local://upfiles/22352/3D952F6DE83C4D0291371D44B9D4C938.jpg[/IMG]
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ampfp
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Sep 28, 2007 09:32 PM