Meh, the edge jammers aren't great, they are just cleaned up bodies with nozzles thrown in them that have had their pop pressure reset. Thats just my opinion though, and the stage 5's may have a little internal work, but I don't think so. As for good injectors, there are some pretty decent brands out there, but they generally come with a price. I would recommend looking at DDP, Schied and F1 diesel injectors, also the WINspeed injectors seem to be doing pretty well (They have Adam Winslett's truck up in record setting territory). There isn't a whole lot of info on those yet though, but They're probably another option.
I do have some friends running jammers and I was looking at a set the stage 5's myself, just because they are cheap. But they tend to run pretty hot and smokey, and there are definitely better injectors to be had.
Those are just nozzle tips. Which means you have to tear apart your stock injectors, and install the new tips. This leads to unbalanced pop pressures and you really need to send your injectors out and have the pressures tested and set back to spec. Even though they will tell you that they install fine and you don't have to reset pop pressures. This isn't true, the truck will still run but you really need to have them checked.
Yeah, IMO they are more trouble than they are worth. There are a lot of guys who run them because they are cheap, and I have 2 really good friends running nozzles, but I don't think that they put out what they claim either. For example, my friend has an 01 With a 4inch, Gauges, FASS, Edge comp, stage 3 nozzles, and an intake and a fully built tranny. My truck is practically the same, except I have the edge drag comp box and 50-60hp smaller injectors, and my will walk all over his truck all day long, and light brand new 33" mud terrains on dry pavement and his won't break the tires loose unless he's going around a good corner or spools it up.
Mine also runs about 300-400* cooler, and after he had all his pressures reset, they ended up costing more than my RV275's. So thats just a basic little comparison.
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