I have only an icebox and reflash on my tsx, It feels 90% stock except maybe some more low end responsiveness and the lower vtec engagement from the reflash. The icebox is all I can hear from the car entirely bc the stock exhaust is so restrictive and trying to sound luxury or something lol. I think without a tune you wont feel much difference, maybe a nicer vtec kick but that probably it.Already have Weapon-R, high flow cat, UR pulley, Hondata.
I know usually the Icebox adds maybe 6hp to a stock car which isn't much.
Given my existing mods is it reasonable to expect a 10-15hp gain from the icebox?