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nitrous jetting question

RX Buck

Lifetime Member
Joined
Sep 11, 2003
Messages
123
Age
48
Location
Grand Rapids MN
Website
mobilepredictive.com
Country
USA
Snowmobile
2017 Yamaha Sidewinder LTX
LOCATION
MN
I am running the Holtzman 40 horse kit with the 2 nozzles for the filter kit. I was wondering if anyone else is running this system and what their NOS jetting is set at. I know NOSPRO sets his at I believe 5.5 turns out for the 60 horse shot witht he stock airbox. I have mine set at 4.75 turns out. I will test this when the snow falls, I believe I can run this setup down to 4 turns out but I will see. I was just wondering if anyone else had any input on this setup.

Later
 

Buck, The best way I found out to be, was to set a little higher, and see if you get a slight bog. I had mine at 7 out, had a bog when I hit the button. Turned in 1 turn, and had a slight lag. Turned in a 1/2 turn, then a 1/4, and I had no lag. I did this on a 20° day, so I knew I would be o.k. if the temp got colder, cause I am in the horsepower tolerance without lag, but still on the fat side for when it got cold.

This also depends on jetting from the carbs. Might be a difference of a 1/2-3/4 turn if that.
 


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