Right, I'd rather not share such precise information for a good reason. You're basically "out" after ketamine i.v. shot misdosed only a bit and if there's no one around, you can't even pray you wake up after an hour... And analogs with phenyl ring substituted by 2-thienyl are not to be messed up with really. I guess anyone who injected ketamine i.v. may report i.m. injection gives better effects in terms of "smooth" falling down the K-Hole. And some praise snorting it for other effects.
One thing I'm sure about my i.v. experience with tiletamine is that it was far from any research-like thing, it was simply abuse as I also used Telazol later and it didn't bother me there's 50mg of a crazy benzodiazepine analog in it (1:1 with tiletamine, for me zolazepam is only ~4 times weaker than clonazepam on a weight basis and articles say the same). Today's world and today's medicine show a finger to people like me. There's not a single person on Earth with any knowledge about medicine and pharmacology caring to help me. So I've "helped" myself numerous times in different ways. Not that I'm ashamed of it, it's not me to be ashamed. I just know this in no way helps people who apparently are in possession of some tiletamine (or in other cases other drugs, not only dissociatives) and want to use it recreationally or use as an aid for depression, for mania, for other problems. Intravenous usage is not the way and I totally disapprove of it.
And if you're still looking for an answer --
Read some posts about ketamine intravenous injection experiences and spice them up. Dose, duration, and onset are easy to deduce from what I wrote on i.m. injection of tiletamine. Still, I advise you to use it intramuscularly if you insist on injection. Tiletamine is harder to "co-operate with" than ketamine and as I'm totally against i.v. usage of any arylcyclohexylamines, I'm against i.v. usage of tiletamine, it doesn't go along with harm reduction.
I'll cut the long story short. I was tapering down with buprenorphine, it didn't work, I was getting more and more frustrated. I didn't use a needle since my last morphine shot in October '09. But then I did, several months later I broke through buprenorphine with 3-MF (~35mcg I guess) a few times. Then I stopped doing that and started using Telazol as it saved me time for obtaining ketamine. 2nd floor restroom, ~2ml of medicine from a 5ml vial preceded by 150mg of pure MDA snorted. Tick! And I was like in a situation balancing on a line over an abyss.