Weird baffles and junk don't always cost power, although sound is a great deciever. Your engine spits out a mouthful then closes up shop for a while, there's often time enough to bleed off pressure, in fact having too large of a stinger diameter will lower the pipe temperature losing power. But there's more to it than that.
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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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