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03-15-2011, 07:12 PM
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Junior Member
My Ride: TRX400EX
Feedback Score: 0 reviews
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My ATV: TRX400EX
Member #1168
Join Date: Mar 2011
Location: gdlw84@hotmail.com
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
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need help with jetting
I ride a 2007 400 ex.I am adding full HMF pro series exhaust, K&N air filter without air box lid, dyna f/s rev box.I ride at 800' to 1000' and generally ride in 50-90 degree weather. Just wanting to know if anyone could help me with the proper jetting and tunning on the carb.
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03-18-2011, 09:56 PM
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Super Moderator
My Ride: 2007 TRX400EX
Feedback Score: 0 reviews
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My ATV: 2007 TRX400EX
Member #8
Join Date: May 2009
Location: VineGrove Kentucky
Posts: 1,014
Thanks: 149
Thanked 38 Times in 38 Posts
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www.HMFracing.com
I have a full HMF sport series exhaust, K&N air filter and no air box lid.
I run a 190 main and a 42 pilot jet. I live in Kentucky. I believe our altitude is around 650.
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04-20-2011, 04:44 PM
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Junior Member
My Ride: No Ride Entered
Feedback Score: 0 reviews
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My ATV: No Ride Entered
Member #1222
Join Date: Apr 2011
Location: TX
Posts: 19
Thanks: 6
Thanked 2 Times in 2 Posts
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if you are running dynojets, on there website it sais to run a 170 main under 3000ft. that is considering you are using their kit along with the airbox lid removed and a good exhaust system. That is their stage 2 jetting suggestions
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04-29-2011, 03:32 PM
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Member
My Ride: 2007 Custom 450R
Feedback Score: 0 reviews
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My ATV: 2007 Custom 450R
Member #1273
Join Date: Apr 2011
Location: Nova Scotia
Posts: 40
Thanks: 0
Thanked 3 Times in 3 Posts
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i switched to the 450 but i'm pretty sure i was happiest with 175 in my 400
im also below 1000'
more fuel is not always the ticket, the only time i got up to 190 was dead of winter - 15c
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