anyone ever have a studder on the gas?

rambunctious

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I have 45Hp Wet NOs on my 2 stroke SRX

pulls to 9000-9200 but has a slight studder ( ratt taat taat taat)
I am hoping it is a rev limiter,
but anyone have this occur at wrong NOS/Fuel ratios?

plugs look good, light color, but brownish, not white

Ramb
 
looks like I had reached the limits of my 2000srx ignition
soft rev limiter through timing retard and studder under load is common above 9000

time to add some clutch weight

Ramb
 


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