Stock Impulse w/upgrades and the Adrenalin is far superior, but it's a $1000 so it better be.
Adrenalin Impulse #105 Black Blasted: 12" Full freak kit, CP Lightning Drop with CP ASA and sometimes I use a Pro-Team warp feed, 88/4500 Crossfire HPA, Evolution II loader
I'm not sure if upgrades is the word, more like accessories. The gun needs absolutely no performance modifications. The addition of an LPR when they're ready will be awesome, but really performance wise the gun is perfect out of the box. Accessories could be adding a full freak kit (the gun comes with a barrel and 1 insert) for $50. Also a drop forward or whatever works for you.
Shoots as close to perfection as I've ever felt. I've held and shot IR3's, LCD's, Bushy's, Gen X/Evolution cockers, Timmy's, etc. The only exception would be a high end Matrix which I hear are really awesome. But anyway, the gun really is amazing, little to no kick, and what kick you do get almost recoils the magnetic trigger into firing by itself. The Blue LED with vision is simple to operate and doesn't give you any unnecessary junk to deal with. The dwell is simple to set with the new 2k2 cricket boards. And of course the max flo reg is one of the most consistent you can find on the market today. Maintenance is very easy as the gun really only has 4 parts inside that need to be lubed. The regulator is more work to clean and maintain then the gun is. The front cap is designed to accept an LPR when your ready to upgrade, so you have a space to put it in without having to buy an adapter.
Hmm...well if I can say a bad thing would be the max flo reg takes a couple thousand shots to break in. But then again almost any gun will have some sort of break in period. So really the only bad is that you have to wait a couple thousand shots for the gun to hit it's full potential, which is well worth it. Also, the impulse is known for it's high performance for little money. Some people have said the Adrenalin better be able to deliver for $1000+. Well, it does, if you want this kind of performance your almost always going to be in the 900+ range. It's not just the best impulse I've ever shot, it's the best gun, period.
The gun is the best thing I've ever held. I encourage anybody looking into a custom impulse or even a new high end marker to check these out. The gun is completely different from any impulse you've ever used I can guarantee you that. The internal airflow is completely customized by Adrenalin. So much so that some stock impulse parts won't work on Adrenalin guns and vice versa. It's been a great investment for me and I love taking it out every time I play. Not to mention the comments you get, there really isn't anything out there like it right now. In short, sell your dog, wife, house, whatever, just get one.