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Old 09-28-2010, 11:13 AM   #1 (permalink)
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Default im trying to make my ltz400 faster what do i need

i got a ltz400 i need help making it faster it has a 470 kit in it frc carb 39 web cams 540/539 yosh slip on kn air fliter cdi dyna tec whats do i do next
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Old 09-28-2010, 12:02 PM   #2 (permalink)
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first off i would uncork your quad by getting rid of the stock headpipe and go with a full system, after that a port and polish will help, 400ex intake boot, and some naawwss!
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Old 09-28-2010, 01:24 PM   #3 (permalink)
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i have a full dg exxelorator stage 3 i will sell its got a shortened muffler just repacked it bout 5 hours ago(its bout 10-12 in long loud ) ill let it go for 175 +shipping obo its a great pipe and makes a big diff in power.

pm me if intrested for pics or to buy it
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Old 09-28-2010, 02:27 PM   #4 (permalink)
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If you want more power change the 540/539 to some 539/539+3 custom Web cams, bore the fcr to a 42, and +1 valves.
Like they said before change the slip on. Get a full exhaust, many recommend the Yoshi rs-3.
And a good port and polish.
Also if you don't go for +1 valves change the stock valves anyway. They are a two piece friction welded design and they can break at high rpm.
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Old 09-28-2010, 02:59 PM   #5 (permalink)
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heavily oxygenated race fuel, and proper tuning after you change out the stock header.
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Old 09-28-2010, 09:21 PM   #6 (permalink)
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INTAKE and HEADDER The stock stuff is way restrictive.
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Old 10-16-2010, 12:51 PM   #7 (permalink)
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i got a fmf power bomb full exhaust and i got a 400ex boot to so u could let it breath better of for sale let me know
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