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Sorry, but blue pipes mean lean and golden/brown pipes is rich. You might want to check that the connection between the exhaust pipe and the muffler is tight and not leaking.

yes I agree, I doubt its rich

To get a guide pull a plug out of each pot and check colors as they will give you a better guide. Black plugs = rich

A rich engine generally runs cooler, lean hotter, hot + blue pipes and is not great for your engine


Have you just fitted aftermarket pipes? Some single wall pipes do blue a little?
 
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