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I get where you're coming from but as of recent i gained a jump in performance due to the same effect from an expansion pipe and the weight on the...
I thought about squeezing that but I'm too cautious to attempt it
Ive had this thing nearly a year, broke it, fixed it, broke it again and fixed it again, back and forth.
Only trouble at the moment is spark plug...
Build till it breaks and build it again.