While we're on the subject, is there a difference in fps consistency between LP and HP inputs? Or is it a case of what the inline reg was designed to take? For instance: I run my etek on LP (works grand at 15bps) but would putting HP into it (as recommended) increase my shot consistency or does it have no effect at all?
Basically your front low pressure reg takes whatever your bottle supply is and conditions it to the actual "firing" pressure of your gun. It's also the main factor of maintaining consistency as it has to provide the same gas discharge shot after shot.
So theoretically you have HP=850PSi at the bottle
Your front reg will tale that 850psi and drop it down to 150-300psi, which is the actual pressure that your gun needs to fire the ball (it varies between markers).
Now your etek will run on LP as for example we'll say it needs 250psi firing pressure. So your LP(450) is reduced down to 250 and your gun goes bang. But your gun then needs to recharge it's pressure ready for the next shot and if it only has 450psi filling the gap where the last shots gas used to be. Then it will fill that gap slower than if it had 850psi filling it. On modern guns with capped bps rates this is not so much of an issue but you could experience shootdown off of the break when your firing consistently. This basically means that your 450psi cannot refill the gun quick enough so your shot pressure will fall 250, 240, 230, 220, 210 etc etc until you stop firing and the gun fills itself fully again.
The reason they recommend HP is really just to prevent this but if your not having problems then don't bother changing.
Hope that's right as it's 12.30am and i'm nearly asleep
