Slip on Muffler Help.

hormone768
Profile picture for user hormone768
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23
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8/15/2006
Location
Lawton, MI, USA
hormone768
Edited Date/Time 1/27/2012 1:09pm
Can anybody tell me if you need to reprogram the mapping on a 2010 YZ 450? I'm going trail riding in the upper part of the Lower Peninsula in Michigan this coming weekend. I just bought a FMF Factory 4.1 Slip on Muffler with a Spark Arrestor insert. All help is appreciated!!!
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Factoryphoto
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4/1/2008
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Northern California, CA, USA
Factoryphoto 8/2/2010 8:59pm
8/2/2010 8:59pm
No you shouldnt have to do anything. I have a Akrapovic and I ran stock map for a while now running the Jay Marmont map. The FI will adjust itself no worries.
Hoss
mxb2
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Bowie, MD, USA
mxb2 8/2/2010 9:06pm
8/2/2010 9:06pm
No need to re map with any slip ons, just when you get a full system FYI! And even some full systems use the stock mapping, Pro circuit as example Good Luck!
hormone768
Profile picture for user hormone768
Posts
23
Joined
8/15/2006
Location
Lawton, MI, USA
hormone768 8/2/2010 9:12pm
8/2/2010 9:12pm
Thanks a lot! I was a little worried since I've only put 15 mins on the bike since I got in March and didn't really want to mess with too much stuff on it.

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