You don't need, and apparently don't even want, high nicotine in your
vape, so don't do this. High nic will only make you sick and won't do all that much for your
throat hit.
I agree with
@Vapemesilly --first stay away from high nic salts--they are formulated to increase your nicotine intake while reducing throat irritation. You want the opposite effect.
1. Switch to low nicotine 6-12mg/ml), high (60 or even 70%) PG eliquids. PG increases TH.
2. Find a new device that will allow you to use lower resistance
coils and higher wattage. You'll get more TH from that.
3. Try decreasing the airflow if your device will let you--more concentrated airflow gives you more direct TH.
4. Experiment with menthol, peppermint, spearmint or citrus flavors--they may provide the sensation you're looking for.
Good luck!