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top speed help

   
Old Jul 15, 2007 | 01:44 AM
  #1  
ridered28's Avatar
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Trailblazer
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Default top speed help
ok i have a 400ex. i have a slip on pipe, jets, and a rev box, and i lost a lot of top speed. can anyone help me get it back and maybe more?

thanks
 
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Old Jul 15, 2007 | 02:02 AM
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rwc0920's Avatar
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Default top speed help
wut was your top speed before and what about now?
 
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Old Jul 15, 2007 | 02:26 AM
  #3  
ridered28's Avatar
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Default top speed help
stock on the street i was like 71-74 now im like 68-70
 
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Old Jul 15, 2007 | 07:03 PM
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Default top speed help
that sounds about 10mphs to fast for a stock 400.
 
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Old Jul 15, 2007 | 08:33 PM
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Default top speed help
Sounds like the carb is not tuned correctly (jets). The engine determines the jet size not the driver. You probably have to do a spark plug chop to tell for sure, but I would almost bet you are too rich.
 
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