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Discussion Starter · #1 ·
I have a 2008 Yamaha raptor 700r
Mods List
Big bore kit
Stage 4 cams
KN air filter with air box lid removed
Lexx fuel programmer
Big Gun slip on exhaust

After I installed the exhaust, after running the it for 5min I noticed the exhaust headers are glowing red. I did some research online and people say it can be running lean, but I have a fuel programmer installed.
Any help will be appreciated
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