I put a Biturbo and an air filter, and rejetted the carb at about 100 miles on my Sprint with no problems, but I followed my breakin procedure, and didn't just go out and ride it 100 miles. I also tuned the carb using an exhaust gas analyzer, eliminatiing the long drawn out procedure of using plug chops. For the record, I don't believe in plug chops, but everybody else does, so, ok. Peace. Jerry.
Re: bi turbo/mods during breakin period?
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