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Everything you ever wanted to know about Piranha upgrades PMI upgrade FAQ
Before we begin I must first say a few things. One, in the end its all going to come down to personal preference, your style of play, and your budget. I am only here to try and help you find the best balance of all three. One certain part will not always be the best choice for everyone. This is also by no means an all-inclusive list, I am just listing the more popular choices.
For example, if you can't pull over like 10bps, don't buy a Halo yet because it won't help you. Or if maybe its just the stock trigger holding you back, you might want to upgrade that first. Also even though an HPA tank will almost always perform better, its not always the right choice. If you don't live anywhere near someone who can refill it, its just more practical to get CO2.
Also it may seem like I'm trying to push the parts that I have more than the others, but I'm not. I just happen to know a little more about the stuff I already own.
Anyway, on to the list. Parts listed in no particular order, just the order I thought of them.
p.s. All prices listed are just what seems to be the going price for a new part.
We really only have 2 likely starting positions here. Either you have an EXT or and Evo and you have the stock DSR reg, or you have no reg at all. The stock reg is a pretty cheap bottom of the line reg that does its job, but its nothing special. I have seen these regs vary from marker to marker a good bit sometimes. Some people may be able to get like +/-4fps (anything less than 5 is really good) out of their reg, while some can't get more than +/-20fps with the same marker. If you got lucky, and you're getting really good numbers with your reg, don't worry about it. On the other hand, some people just need to have something better. Also expansion chambers don't do anything for HPA, and will sometimes hurt efficieny.
Inline regs are also universal, so one from pretty much any other marker will work.
Helpful links: http://www.akalmp.co...y-reg-graph.jpg
Ignore the AKA ads on there. The 2 liter was a hand built sample so don't expect it to always perform that well. Also all of the testing was done by an independant source.
- CP reg (~$65): ( http://www.customproducts-az.com/ currently down, let me know if anyone finds their new site)One of the most popular, partly because of the lower price. Although not tested for the flow chart, it is known to be a high quality reg. It performs well with both HPA and CO2.
- Evil Detonator (~$65): ( http://www.evil-paintball.com/ )Also becoming more and more popular since the graph was released. Notice that only the hand-built sample reg from AKA beat it. The Evil reg, does need to be properly broken though. Evil reccomends a 5000 shot break in. You don't need to use actual paint, just dry firing will do. Most regs perform better once properly broken in. Evil i just one of the few companies who outwardly tells you to do so. I am pretty sure thats why the graph for the Det. is a little more jagged than the others. As a personal note, I can get around +/-4fps with mine, while I've seen others get as low as +/-2fps with them. I'm not sure how well it works with CO2, let me know if any of you have tried it.
- PMI Pure Energy reg (~$30): ( http://www.buypmi.com/ )This is one of those things where you get what you pay for. If you're broke, this reg is better than no reg at all. Also this is not the same reg as the DSR reg that comes stock on some PMI models now.
- Palmer's Stabalizer (~$90): ( http://www.palmer-pursuit.com/ )Widely accepted as the best reg for CO2, and one of the better ones for HPA. Palmer's also reccomends a 2-3000 shot break in. A great thing about these is that Palmer's offers a lifetime warranty on them.
- Bob Long Torpedo (~$60): ( http://www.boblong.com/ )Read the notes on the second dyno graph about the Torpedos performance. It might have performed better if the guy had a better sample. These came stock on a lot of Timmys, and since a lot of Timmy owners want to upgrade, there are a lot of used ones floating around for cheap. A decent reg either way, especially for the price.
First check your marker and see if its flush-cocking or not. You'll want to retain flush-cocking if possible, as it helps reduce kick slightly, and helps prevent cocking rods to your face. Second check to see how many detents if any your marker has. If your marker uses detents, then you're going to need a bolt that has the detent grooves in it. The Evo has 2, the rest of the 2k3/4 models have 1. If you have an Evo, but the bolt you want only has 1 detent groove, you will either have to make one yourself, or remove one of the detents. Removing one of the detents shouldn't cause a problem unless you're using a Halo or Q-loader.
The only reasons to upgrade your bolt are kick, air efficiency, and wear on the marker. Upgrading it really won't help much else. Bolts will usually be aluminum (stock), delrin, or nylatron. Some delrin bolts can swell slightly when in contact with oil or high humidity. You'll probably want a bolt with orings to help with air efficiency/consistancy since it gets a better seal. Some companies decided not to use o-rings because then you must oil the bolt.
- Boss bolt (~$30-34): ( http://www.rjskateworks.com )Although the debate is still raging on which bolt is better, this is the most popular. RJ supposedly uses a higher-grade delrin than most companies and he says that it shouldn't swell nearly as much as standard delrin. I have played with mine in 90+ degree heat, with very high-humidity, and a well oiled Boss bolt with absolutely no noticable loss in performance. The Boss offers a bolt for the Evo (having 2 detent grooves). Has o-rings.
- Shocktech (~$20-35): ( http://www.shocktechusa.com )There are two models. The older, cheaper one uses different delrin and doesn't have o-rings, the newer one uses orings. I was told that the newer ones use the higher grade delrin like the Boss bolts, but I'm not 100% on that. Both are part aluminum, part delrin, so they will probably be a little heavier, and thus produce a little more kick than the all delrin/nylatron ones. I don't think they offer an Evo verison.
- Spudnukl bolt (~$25): ( http://www.spudnukl.com/ )A Nylatron bolt. I don't know too much about this one. They do offer an Evo version. Has o-rings.
- Tigershark bolt (~$15): ( http://www.apmproducts.com/ ) Again, I don't know much about this one other than its another nylatron bolt, and it does not use o-rings. As far as I know they don not offer an Evo version.
CO2 or HPA, LP or HP, anti-siphon or not, adjustable or preset, etc.
HPA will almost always perform better than CO2, and by perform better I mean it will be more consistent, but its not going to be cheap. Also CO2 will generally have more debris in it that can gunk up your reg/marker over time. If you do go with CO2, I reccomend getting it anti-siphoned. An anti-siphon kit is cheap (~$10), and helps your CO2 to be more consistent, and better for your marker. It must be professionally installed though. Also CO2 tanks are all pretty much going to perform the same.
HPA isn't cheap. Be ready to spend anywhere from $75-$400 on a tank. Sure you can get a 47ci/3000psi metal tank for like $80, but its going to be heavy, and you'll run out of air pretty quick. Every marker is different but the general rule of thumb is 10 shots per cubic inch for 3000psi tanks, and 15 for 4.5kpsi tanks. You'll probably get slightly better numbers than that with most Piranhas though. Decide for yourself what size pressure best fits you and your budget. Also make sure to check if anyone around you can fill over 3000psi, because most places can't, and it would be kind of a waste to spend the extra money on a 4500 tank if you never fill it above 3000.
LP (~450psi output) or HP (~800psi output)? The only reason you should get an LP tank is if you aren't using a reg at all, and your marker works best at a lower pressure. There are very few markers that need an LP tank. Sure your marker may only be running at 300psi, but your reg needs some extra "head pressure" to be able to keep airflow consistent at high rates of fire.
Fixed output or adjustable tank? Basically if you already have an inline reg, get a preset. There is no real gain from having two regs, and it might cause shootdown problems by starving the second reg. Its up to you if you'd rather have your reg on the marker or on the tank. There isn't any real difference in performance. If you get a tank with a preset reg, Crossfire makes the best flowing regs. If you get an adjustable, the Evil Scion is supposed to be the new highest flowing one. Also 3A tanks are very popular because 3A sell them cheap on Ebay. They use Centerflag regs, which are really good too.