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i have a OS 160 FX on a 72" QQ yak with the Bisson Pitts style muffler. wondering how cutting the tips off of the stingers will effect the performance. i'm not worried about fuel pressure due to using a perry pump. it has great power but i'm always looking for a little more and was told that it would give me 400 more rpm. if any of you have done this please let me know how it worked out.

thanks
randy racer