So why is it better breathing? But here's another slant on the thought process. Let's say that this pipe causes a stronger depression at some, or if yer real lucky most revs, there will be more suction pulling air in through the carb, ideally for longer. More air pulls in more fuel.
Don't over think it, just trial new vs old with jets that optimize that settup. Don't assume new parts always better than old despite money spent. Which is a bitter pill if it doesn't turn out, but often it does.
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'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
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