First of all its spelled "suboxone".
Also....yes, you can inject suboxone, allthough its not smart unless your using a micron filter which gets rid of all those binders and fillers.
But....it would be pointless for you to take any more suboxone, whether you inject it, snort it, or take it in your mouth. Any dose over 2 mg's is gonna feel the exact same pretty much. It will just take away your withdrawals.....taking more and more suboxone will only give you a headache....it wont make you feel better or give you a "rush".....in fact, with suboxone, there really isnt a "rush" in the traditional sense, even if you inject it.
I inject my suboxone every single day, but I only do it in doses of 0.5mg's. thats because suboxone only has euphoric effects at doses lower than 1mg. If you take any more than that, it will simply keep you from having withdrawals.
All this has ben explained on BL MANY MANY MANY times. If you do a quick search you can find the answers you need. Allthough, I have a feeling your just gonna inject the suboxone anyway. And when you do, you will be unimpressed. It will do nothing but give you a headache.
If you truly are going to take suboxone from now on and no other opiates, I reccommend taking only 0.5 mg doses(injected if you like, in fact it gives you a tiny "rush" this way, but only in tiny doses).