Question about 2005 Suzuki Boulevard M50

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I took off the factory mufflers on my suzuki m50 that is fuel injected and put straight pipe on it. Drove it for awhile and now it wont run unless the air cleaner is off. How can I adjust it?

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There is no adjustment on the fuel injection model unless you put it on a computer and have it remapped.

When you put straight pipes on the bike, you did away with a baffle that was in your stock pipes.
so now there is no back pressure, and your bike is breathing now.
But it can't breath if it can't get the air.
When you remove the air cleaner it breaths.
So you need to purchase a High-Flow air filter.
If you have an airbox, you may need to eliminate that as well, but start with just the high flow fliter first.
When putting on straight pipes and a high flow air filter , you will also need to increase your carburetor main jet size at least 1-2 numbers:example:stock 120 go to 122.
if you don't increase the main jet your bike will run lean and hot.

Once done you'll be able to crack that throttle and the whole neigborhood will here ya.
Loud pipes save lives.
Best Regards
Big Al

Posted on May 28, 2011

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Posted on Jan 02, 2017

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