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quick question about 400ex

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  #1  
Old 10-18-2000 | 11:15 PM
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how is this setup for normal riding

yoshimura full system (or should i get slip on)
k&n power kit (includes filter and jets)
6 one inch holes drilled in the airbox lid plugged with filtered vents.....
 
  #2  
Old 10-18-2000 | 11:28 PM
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don't forget to switch to a 14 tooth front sprocket... I highly recomend it unless you spend 75% of your time running wide open in 5th.

Leo
 
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Old 10-18-2000 | 11:29 PM
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also before you go spending big $$ on a yoshi you might want to ask Gabe about his mods... I think you would get more bang for your buck using his setup.
 
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Old 10-18-2000 | 11:38 PM
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How much topend mph do you lose and how much lowend acceleration and torque do you gain with a 14 tooth front sprocket?Thanks
Jeff
 
  #5  
Old 10-19-2000 | 08:02 AM
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Before I changed the sprocket the bike wouldn't rev out in 5th gear.. now it's capable of almost hitting the rev limiter, so I think the extra RPM's are making up for most of the speed loss (the bike is stock except for the sprocket). I noticed a big difference in torque, it just makes the bike feel 'snappier'. My GPS is on the blink so I don't have any hard numbers as far as the top-speed loss goes, but the bike is definately mroe fun to ride now.

Leo
 
  #6  
Old 10-19-2000 | 09:03 AM
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I heard the stock header is sufficient for low end mods such as jets, filters, and pipes.

Can anyone else back this up with hard facts?
 
  #7  
Old 10-19-2000 | 01:41 PM
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hey guys why are you trying to slow these bad boys up? i run a 16 tooth front sprocket and a k&n filter with a 155 main jet, and that boy will run and guess what? it still comes up in 3rd and 4th... i also got a white brothers e series pipe, shredder tires in the rear holeshots in the front.go to a 16 for topend, the ex dont need anymore low end it needs top for the love of god!!
 
  #8  
Old 10-19-2000 | 02:29 PM
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It all depends on where you ride. I don't need anymore top to my bike, I need torque. A smaller front sprocket increases torque multiplication and brings the gears a bit closer together, giving me a little more control of where I can put the RPM band.

Torque is more fun than a couple of MPH of top speed anyhow.
 
  #9  
Old 10-19-2000 | 04:18 PM
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Ya it all depends on your riding area.. I run a 14T up front and a 39T rear for dunes I run 15T and a 38T for drags and a 14T/38T for MX.. Sometimes 15/38 for MX also
 
  #10  
Old 10-19-2000 | 06:09 PM
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TRUE GUYS BUT A FEW MPH ISNT WHAT WERE TALKING, I GAINED 8MPH WITH MY K&N AND 16 TOOTH SPROCKET, ALL I CAN SAY IS KEEP RIDING RED!!!!!
 


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