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xr250r muffler tuning

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if you take out the two bolts in the end of a 1989 xr250r stock muffler will it give me more power?

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If you're talking about the two on the very end, those hold the baffle or spark arrestor in place. The two little ones on the bottom at the end of the muffler is a bypass type deal.

Taking either or will give your bike more pep. I've tried it, it works. But I'm afraid of running it lean so I just test rode.

It'll sound a lot different too, just watch out for those EPA dudes.

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If you're talking about 2 on the bottom that hold a little cover in place, that is used to blow exhaust crud out of the system. Once a year or so you're supposed to open that up and crank the revs up to blow the spooge out of the guts of the exhaust.

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im talking about the two inside of the end of the muffler. sorry can't get any pics up because my cameras not working.

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