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post #1 of 6 (permalink) Old 02-10-2011, 08:24 AM Thread Starter
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Break in Period?

Hi there, was just wondering if there is something in the ecu that sends extra fuel to the engine for a certain "break in period". I've heard of this on certain snowmobiles and after about 1500 k or so it leans out a little and works better.. I was just curious, mine seems to really be running rich.. don't get wrong, i'm not going to change that was just wondering that's all
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post #2 of 6 (permalink) Old 02-10-2011, 08:49 AM
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Good question, give a bit and the XTZ guys will be right with you. I have a carbed 650 so not much help.



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post #3 of 6 (permalink) Old 02-10-2011, 12:46 PM
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I have not heard of any of the 700's running rich. So maybe your assumption is right about it running rich for some break in time. I would think 1 tank might be enough time. Defiantly 2 tanks.



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post #4 of 6 (permalink) Old 02-14-2011, 05:33 PM Thread Starter
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Quote:
Originally Posted by sandchris View Post
I have not heard of any of the 700's running rich. So maybe your assumption is right about it running rich for some break in time. I would think 1 tank might be enough time. Defiantly 2 tanks.
Ya, just wasn't sure.. I've had a few tanks through it and it still seems to be getting a lot of fuel.. I know the factory settings are always going to be a little on the rich side, just to be safe. Maybe closer to the end of riding season I'll look at adding a power commander or something. It seems to work quite well regardless but this might be a way to pull a little more efficient power out of it with limited modification? We'll see.. Thanks for the input

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post #5 of 6 (permalink) Old 02-14-2011, 06:51 PM
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Keep in mind it will be rich on start up cold. This is the cold start that acts similar to a choke on carburated engine.



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post #6 of 6 (permalink) Old 02-16-2011, 07:11 PM
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I dont know of any brake in period for EFI. But yes the XTZs do run rich from the factory and could be leaned out a little.

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