Dyno Guesses & Bench Racing Forum - Power gains with the mods I have without a tune

I have an slp lid, LT headers 3inch y-pipe with flow master catback and cutout .I've yet to have the car dyno tuned what kind of power gains do you think I have gained not having it tuned yet?

You might pick up an additional 10-20 hp with a tune.

Ditch the flow master. Assuming its the one with the cross flow junk. But in all honesty LT headers alone on stock tune will net 15-20 rwhp.