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post #1 of 12 (permalink) Old 12-17-2009, 04:32 PM Thread Starter
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Question CDI Box

Is a CDI box worth the money to intall? or will it cause the engine to run too high rpms and lead to engine problems over time?

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post #2 of 12 (permalink) Old 12-17-2009, 06:16 PM
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You will be fine running at 1000 RPM's higher. It also changes the ignition curve. Amazing upgrade.

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post #3 of 12 (permalink) Old 12-17-2009, 06:31 PM
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I agree You will see a world of difference.

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post #4 of 12 (permalink) Old 12-17-2009, 07:20 PM Thread Starter
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but will it cause problems for the enigne if you run it too high or can it handle the extra 1,000?

2007 Honda TRX 400ex +FMF Powercore 4
2005 Honda Foreman 500 2X4/4X4
2004 Honda Rancher 350 2X4
1988 Honda Fourtrax 300 2X4
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post #5 of 12 (permalink) Old 12-17-2009, 07:41 PM
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You'll be fine I got one on my quad very responsive add on

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post #6 of 12 (permalink) Old 12-17-2009, 07:42 PM Thread Starter
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So what about the ignition curve? what does that do?

2007 Honda TRX 400ex +FMF Powercore 4
2005 Honda Foreman 500 2X4/4X4
2004 Honda Rancher 350 2X4
1988 Honda Fourtrax 300 2X4
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post #7 of 12 (permalink) Old 12-17-2009, 07:46 PM
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I think It advances the timing a bit to fire the plug hotter something like that.

"MOOSE WAGON "
00 TRX400EX aka "MOOSE ROCKET"
91 TRX250X aka "MOOSE WAGON" RETIRED
96 Polaris 400L sport (Mrs. Moose Ride)
07 Suzuki LTZ250 (Sons)
96 Polaris 250 Trail Blazer (daughters)
06 TRX450ER aka === Under construction

Progress and Help
PM FOR MANUAL HELP
JETTING
Service_Manual_Downloads
2000_400EX_Build
400EX_Pivot_Bolt_
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post #8 of 12 (permalink) Old 12-17-2009, 07:51 PM Thread Starter
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thats what i thought. I wasn't too sure.

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2005 Honda Foreman 500 2X4/4X4
2004 Honda Rancher 350 2X4
1988 Honda Fourtrax 300 2X4
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post #9 of 12 (permalink) Old 12-17-2009, 08:40 PM
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Everyone I know who has one likes it.

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post #10 of 12 (permalink) Old 12-17-2009, 08:46 PM Thread Starter
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only a houndred bucks. and comapred to other fouwheeler parts thats cheap.

2007 Honda TRX 400ex +FMF Powercore 4
2005 Honda Foreman 500 2X4/4X4
2004 Honda Rancher 350 2X4
1988 Honda Fourtrax 300 2X4
HONDA DOMINATES!!!
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