they do mate, reduce inlet temperatures alot, which allows the ecu to run more timing advance, lower inlet temp = more power. fmic will allow power to be held further up the rev range, wont increase physical bhp but allow power to be held longer
i would reccomend going custom fmic like i did for the lc, good kit and reletavly easy install. the forge fmic is twin pass which will create more pressure drop than the single pass resulting in a little more lag.