Enathate is a relatively long-chain ester, so you will not see rapid gains during the first week or two. By end of week 3 you should be seeing an increase in weight and strength at 500 mg.
I don't think I've ever actually felt a "kick" from test enan. I would say around 3 weeks you should notice gains. It's hard for me to say because I always kick mine off with fast acting gear. Usually d-bol for the first 4 weeks.
I am using 750 a week and started to notice gains three weeks in. unfortunately i am out the a torn peck. But I would recomend onc a week hits instead of twice a week. I usually hit 1.5cc in two locations on tuesday and by the next tuesday the pain is usually gone. So you could do 1cc in each delt or glute and rotate back and forth each week instead of playing with it twice a week. IMO Good luck and happy gains!
I typically put on alot more weight in the first two weeks...and then big strength gains come on at about weeks 4-5...(this from enanthate, sust, cyp...)
To me it's a gradual thing. You don't feel it all at once. It's too bad that you didn't have a small amount of dbol handy when you started. That would have helped some. Personally I didn't get much from the QVE until I upped it to 750mgs per week. That dosage helped me in a lot of areas.... To answer your question though...it took about 3 weeks or so before I really felt the test kicking in. It's good gear.