I never inject.
I trim a good bit of fat off, too, prior to smoking.
I roll at 275 until it probes tender all over & then rest it for an hour or so, then pull it and hit with my vinegar sauce.
My family has put me on strict notice to not tamper with my pulled pork method. They want me to stay locked in to results I've been getting this past year or so.
Kamado Joe Big Joe, Char-Griller Akorn, Maverick ET-732, Splash-Proof Superfast Thermapen