Alot of lt depends on what kind of tune you had Mike do Jason. Mike does a heck of a valve job on them. One thing for sure... when you press them for velocity, they do start to gobble up the fuel..just like a race car. And if you see the "cloud", it's to rich anyhow. The more power, the more fuel.
Also, the temp has a lot to do with velocity as well as fuel consumption. And Ian is right about hammering the hell out of the valve stem. That is just an easy and simple way to gain but not necessarily the best when there other options and if the mechanical ability is there.
The "D" model that I just had Mike do for me is right at where you are and to me that's perfect, and it ain't a gas guzzler.... in fact, pretty economical and yet has enough power for most small game with good placement. And it is a tack driver for sure.
If you do all of the mods in the CoTune guide, it will be up there but to me isn't worth it. That's why there are so many variables to choose from. It's a matter of choosing or making the right selection of mods for the performance that you want. Some guys don't care and it might not be to bad if it were on the "T" model using 9 ounce tank or any thing else that is bulked and can stretch the shooting time but that of course doesn't cut the consumption.
I've been tossing around the HPA also. In fact Tim was over a couple of weeks ago and we were dosing my "CJ-QB" with HPA and pushing 14.3's at close to 950 fps at 1000 psi. The QB can handle 1000 psi and quite a number of guys do but it would be much wiser to keep it at 850 or 900 in my opinion. I just don't trust the Chinese...lol... :p ...and you don't need that much anyhow. Velocity dropped to about 825-850 if I recall correctly and that's plenty for me.
