Reply To: Fx Impact Mods for more FPS / FPE

Forums PCP Airguns Fx Impact Mods for more FPS / FPE Reply To: Fx Impact Mods for more FPS / FPE

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heavy-impact
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Skidoo165

I'm new to the tuning world and this is some great info, would like to start slow, can I dual port the pellet probe to start? And what about the TP, is it necessary? I have the impact x in .30 shooting 870fps…thanks!

It is necessary to have two ports in the brass pellet inlet if you have two ports in the pellet probe, otherwise you're drilling holes that don't do anything. The valve is the main restriction in .30, next is the porting and plenum.