Huma reg in gen 1/2/3
I fitted one so i can keep 2 regs set at 2 different pressures, it seems the .25 comes with the longer and thinner walled plenum than the original so potentially more power, if you into that. seems like 10-20% more volume to me.
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I made my Reg pullers, one’s a 3mm for the Huma the others a 4mm for the Vulcan