Are you sure it's not your atomizer?
I hated my tank attys. I bought a double kit and they were both so muted. I immediately bought two LR 1.5 510 attys and drip tips. But I'm off topic. If you have an ego, you can use anything 510. Also, just my two cents: If you want the battery life and style of the ego-t, and still want to keep the tank, get a blank cone, a regular 510 atty, and a 510 tank. They are so much better than the ego tank system.
I've tried both atomizers and several tanks with different juices. Maybe it is the primer on the wick I've read about? I am very happy with the vapor production and the battery life, but every juice I try tastes the same. Maybe I am doing something wrong?
I switched to the Low Resistance tank atties and that made a huge difference in the flavor/taste. Using a good e-liquid also makes a big difference. I can only vape 100% VG, but thinned out it works great for me. I have been using my Ego-T's for months now and love it with the LR atties. Everyone has such different tastes, but stick with it and you'll find what works for you. Good luck!!
PS - Make sure you blow out the primer really good first tho. I found blowing on the end where the tank goes in works well for getting all the primer out through the battery end.
That's true about good juice. I was thinking about this today. I've tried the mega carts, tanks, mini tanks, dual coil cartos and the only juice that I have used in all of them that has stayed exactly the same is nhalers juice. I don't know what it is about his juice. And they never clog up regular cartos like some of my other juices do. He only has 12 and 24. I'm not sure what the ratio is but it's great juice. That's his nhaler/xhaler juice. I find his high voltage juice too thick for my ego.