Thanks for report. You may find a replacement header pipe without the catalytic converter 4 cheap. I think the one for the bashan storm was $10-15 or so. Grind out the inner welds and make it smooth flowing. Get a performance exhaust to drop weight etc such as
http://www.amazon.com/FMF-Universal-...estor+silencer
These and all "performance" improvements need to be taken with a grain of salt. In other words, overall improvements vs costs , are marginal but still helpful.
Probably the best upgrade is to go on a diet and for some of us lose about 20 lbs, talk about performance improvements!
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2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE
2017 Suzuki V Strom 650 XT
"We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~