The only way i see it improving your chances is if your interviewing. They may compare you with another FMG who is literally equivalent on every level but doesn't have it, and you'd win that battle. What are the chances of that happening though? Ofcourse it will never ever hurt to have it, you only have to gain. But the gain is not life-changing. In other words, don't expect it to magically change your application to a winner automatically. Actually step 3 was ranked as the least thing PDs look at when ranking/offering interviews to applicants (source: nrmp program director survey). Step 1 scores, mspe, and LOR remain the biggest deciding factors for getting interviews in the first place, and then actually getting ranked high enough to match (source: nrmp program director survey). And don't forget, step 3 score may matter when you apply for fellowship (so be careful). Tbh with you, as an FMG, i think the ultimately BEST THING you can do is to find a hospital that offers externships which has a ERAS residency program you want to join that is FMG friendly and do rotations there build inner connections: preferrably do it 2 months before the interview season and maybe 1 month during interview season to increase your chances there when you apply to that program during the match.