It is fairly common for ENFPs to have difficulty to determine whether they are ENFP or ENTP, as dominant Ne is very idea-oriented, and that can easily overshadow the accompanying Fi or Ti. Combine this with the tertiary Te or Fe being extroverted, and it obscures the T/F distinction even more. An easy way to help you distinguish which you are, which functions you use, is to determine whether it is easier for you to understand NTPs or NTJs. ENFPs tend to see past NTJ abrasiveness, and really appreciate NTJ directness and insights. ENTPs on the other hand have more difficulty dealing with NTJs, and much prefer the precision of INTPs, for example.